16601161512 has 32 divisors (see below), whose sum is σ = 44695435680. Its totient is φ = 5108049600.

The previous prime is 16601161439. The next prime is 16601161519. The reversal of 16601161512 is 21516110661.

It is a super-2 number, since 2×16601161512² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16601161512.

It is not an unprimeable number, because it can be changed into a prime (16601161519) 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, 26604114 + ... + 26604737.

It is an arithmetic number, because the mean of its divisors is an integer number (1396732365).

Almost surely, 2^16601161512 is an apocalyptic number.

16601161512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16601161512 is an abundant number, since it is smaller than the sum of its proper divisors (28094274168).

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

16601161512 is a wasteful number, since it uses less digits than its factorization.

16601161512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53208873 (or 53208869 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The spelling of 16601161512 in words is "sixteen billion, six hundred one million, one hundred sixty-one thousand, five hundred twelve".