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16685370000037 = 19878177368423
BaseRepresentation
bin1111001011001101110110…
…0011010100001010100101
32012002002212010100012102001
43302303131203110022211
54141333114210000122
655253053025445301
73341323010626054
oct362633543241245
965062763305361
1016685370000037
115353253418602
121a558a07a0831
1394056797582b
1441980d1d439b
151de0588a8527
hexf2cdd8d42a5

16685370000037 has 4 divisors (see below), whose sum is σ = 17563547368480. Its totient is φ = 15807192631596.

The previous prime is 16685369999993. The next prime is 16685370000053. The reversal of 16685370000037 is 73000007358661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-16685370000037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16685370000737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439088684193 + ... + 439088684230.

It is an arithmetic number, because the mean of its divisors is an integer number (4390886842120).

Almost surely, 216685370000037 is an apocalyptic number.

It is an amenable number.

16685370000037 is a deficient number, since it is larger than the sum of its proper divisors (878177368443).

16685370000037 is an equidigital number, since it uses as much as digits as its factorization.

16685370000037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878177368442.

The product of its (nonzero) digits is 635040, while the sum is 46.

Adding to 16685370000037 its reverse (73000007358661), we get a palindrome (89685377358698).

The spelling of 16685370000037 in words is "sixteen trillion, six hundred eighty-five billion, three hundred seventy million, thirty-seven", and thus it is an aban number.

Divisors: 1 19 878177368423 16685370000037