16155798507 has 12 divisors (see below), whose sum is σ = 23684455080. Its totient is φ = 10609777728.

The previous prime is 16155798499. The next prime is 16155798599. The reversal of 16155798507 is 70589755161.

It is a happy number.

16155798507 is a `hidden beast` number, since 1 + 6 + 1 + 557 + 9 + 85 + 0 + 7 = 666.

It is not a de Polignac number, because 16155798507 - 2³ = 16155798499 is a prime.

It is a super-2 number, since 2×16155798507² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16155790507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13395582 + ... + 13396787.

It is an arithmetic number, because the mean of its divisors is an integer number (1973704590).

Almost surely, 2^16155798507 is an apocalyptic number.

16155798507 is a deficient number, since it is larger than the sum of its proper divisors (7528656573).

16155798507 is a wasteful number, since it uses less digits than its factorization.

16155798507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26792442 (or 26792439 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 54.

The spelling of 16155798507 in words is "sixteen billion, one hundred fifty-five million, seven hundred ninety-eight thousand, five hundred seven".