16251612201 has 64 divisors (see below), whose sum is σ = 27064074240. Its totient is φ = 9553662720.

The previous prime is 16251612199. The next prime is 16251612233. The reversal of 16251612201 is 10221615261.

16251612201 is a `hidden beast` number, since 1 + 6 + 25 + 1 + 612 + 20 + 1 = 666.

It is not a de Polignac number, because 16251612201 - 2¹ = 16251612199 is a prime.

It is a super-2 number, since 2×16251612201² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16251612241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1572216 + ... + 1582518.

It is an arithmetic number, because the mean of its divisors is an integer number (422876160).

Almost surely, 2^16251612201 is an apocalyptic number.

16251612201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16251612201 is a deficient number, since it is larger than the sum of its proper divisors (10812462039).

16251612201 is a wasteful number, since it uses less digits than its factorization.

16251612201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10483 (or 10477 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 16251612201 in words is "sixteen billion, two hundred fifty-one million, six hundred twelve thousand, two hundred one".