16361658551 has 24 divisors (see below), whose sum is σ = 20175181920. Its totient is φ = 13184489472.

The previous prime is 16361658527. The next prime is 16361658581. The reversal of 16361658551 is 15585616361.

It is a de Polignac number, because none of the positive numbers 2^k-16361658551 is a prime.

It is a super-2 number, since 2×16361658551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16361658496 and 16361658505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16361658581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 763286 + ... + 784428.

It is an arithmetic number, because the mean of its divisors is an integer number (840632580).

Almost surely, 2^16361658551 is an apocalyptic number.

16361658551 is a deficient number, since it is larger than the sum of its proper divisors (3813523369).

16361658551 is a wasteful number, since it uses less digits than its factorization.

16361658551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22103 (or 22096 counting only the distinct ones).

The product of its digits is 648000, while the sum is 47.

The spelling of 16361658551 in words is "sixteen billion, three hundred sixty-one million, six hundred fifty-eight thousand, five hundred fifty-one".