51603867156 has 24 divisors (see below), whose sum is σ = 124293186304. Its totient is φ = 16646408640.

The previous prime is 51603867127. The next prime is 51603867167. The reversal of 51603867156 is 65176830615.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 69359665 + ... + 69360408.

Almost surely, 2^51603867156 is an apocalyptic number.

It is an amenable number.

51603867156 is an abundant number, since it is smaller than the sum of its proper divisors (72689319148).

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

51603867156 is a wasteful number, since it uses less digits than its factorization.

51603867156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138720111 (or 138720109 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 51603867156 in words is "fifty-one billion, six hundred three million, eight hundred sixty-seven thousand, one hundred fifty-six".