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16107453881 = 61277953273
BaseRepresentation
bin11110000000001010…
…00011110110111001
31112120120000102210222
433000011003312321
5230442002011011
611222154345425
71110105045641
oct170005036671
945516012728
1016107453881
116916268562
12315642b275
1316991096cc
14acb343521
1564416dddb
hex3c0143db9

16107453881 has 8 divisors (see below), whose sum is σ = 16430630664. Its totient is φ = 15786184320.

The previous prime is 16107453839. The next prime is 16107453911. The reversal of 16107453881 is 18835470161.

It can be written as a sum of positive squares in 4 ways, for example, as 208513600 + 15898940281 = 14440^2 + 126091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16107453881 - 214 = 16107437497 is a prime.

It is a super-2 number, since 2×161074538812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16107453781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459740 + ... + 493533.

It is an arithmetic number, because the mean of its divisors is an integer number (2053828833).

Almost surely, 216107453881 is an apocalyptic number.

It is an amenable number.

16107453881 is a deficient number, since it is larger than the sum of its proper divisors (323176783).

16107453881 is an equidigital number, since it uses as much as digits as its factorization.

16107453881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953611.

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 16107453881 in words is "sixteen billion, one hundred seven million, four hundred fifty-three thousand, eight hundred eighty-one".

Divisors: 1 61 277 16897 953273 58149653 264056621 16107453881