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16164441053 = 19981228347
BaseRepresentation
bin11110000110111100…
…11100101111011101
31112201112020200111222
433003132130233131
5231101044103203
611231552023125
71111366324205
oct170336345735
945645220458
1016164441053
1169454508a2
123171531aa5
1316a7b70227
14ad4b39405
15649179038
hex3c379cbdd

16164441053 has 4 divisors (see below), whose sum is σ = 16245669600. Its totient is φ = 16083212508.

The previous prime is 16164441049. The next prime is 16164441067. The reversal of 16164441053 is 35014446161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35014446161 = 64154624721.

It is a cyclic number.

It is not a de Polignac number, because 16164441053 - 22 = 16164441049 is a prime.

It is a super-2 number, since 2×161644410532 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16164441023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40613975 + ... + 40614372.

It is an arithmetic number, because the mean of its divisors is an integer number (4061417400).

Almost surely, 216164441053 is an apocalyptic number.

It is an amenable number.

16164441053 is a deficient number, since it is larger than the sum of its proper divisors (81228547).

16164441053 is an equidigital number, since it uses as much as digits as its factorization.

16164441053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81228546.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 16164441053 in words is "sixteen billion, one hundred sixty-four million, four hundred forty-one thousand, fifty-three".

Divisors: 1 199 81228347 16164441053