16511011156 has 12 divisors (see below), whose sum is σ = 28904263668. Its totient is φ = 8252650112.

The previous prime is 16511011103. The next prime is 16511011157. The reversal of 16511011156 is 65111011561.

It can be written as a sum of positive squares in 2 ways, for example, as 4828860100 + 11682151056 = 69490^2 + 108084^2 .

It is a super-2 number, since 2×16511011156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16511011157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700831 + ... + 724006.

It is an arithmetic number, because the mean of its divisors is an integer number (2408688639).

Almost surely, 2^16511011156 is an apocalyptic number.

It is an amenable number.

16511011156 is a deficient number, since it is larger than the sum of its proper divisors (12393252512).

16511011156 is a wasteful number, since it uses less digits than its factorization.

16511011156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427738 (or 1427736 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 28.

The spelling of 16511011156 in words is "sixteen billion, five hundred eleven million, eleven thousand, one hundred fifty-six".