16105565616 has 80 divisors (see below), whose sum is σ = 47563574784. Its totient is φ = 4600253952.

The previous prime is 16105565573. The next prime is 16105565653. The reversal of 16105565616 is 61656550161.

It is a super-2 number, since 2×16105565616² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2095156 + ... + 2102828.

Almost surely, 2^16105565616 is an apocalyptic number.

16105565616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16105565616 is an abundant number, since it is smaller than the sum of its proper divisors (31458009168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16105565616 is a wasteful number, since it uses less digits than its factorization.

16105565616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13938 (or 13932 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 16105565616 in words is "sixteen billion, one hundred five million, five hundred sixty-five thousand, six hundred sixteen".