16356551956 has 24 divisors (see below), whose sum is σ = 29133220424. Its totient is φ = 8033143680.

The previous prime is 16356551951. The next prime is 16356551971. The reversal of 16356551956 is 65915565361.

It can be written as a sum of positive squares in 4 ways, for example, as 1553936400 + 14802615556 = 39420^2 + 121666^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16356551951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133126 + ... + 224578.

Almost surely, 2^16356551956 is an apocalyptic number.

It is an amenable number.

16356551956 is a deficient number, since it is larger than the sum of its proper divisors (12776668468).

16356551956 is a wasteful number, since it uses less digits than its factorization.

16356551956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92251 (or 92249 counting only the distinct ones).

The product of its digits is 3645000, while the sum is 52.

The spelling of 16356551956 in words is "sixteen billion, three hundred fifty-six million, five hundred fifty-one thousand, nine hundred fifty-six".