51263620032 has 28 divisors (see below), whose sum is σ = 135634995176. Its totient is φ = 17087873280.

The previous prime is 51263620027. The next prime is 51263620033. The reversal of 51263620032 is 23002636215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51263620033) 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 3 ways as a sum of consecutive naturals, for example, 133498819 + ... + 133499202.

Almost surely, 2^51263620032 is an apocalyptic number.

It is an amenable number.

51263620032 is an abundant number, since it is smaller than the sum of its proper divisors (84371375144).

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

51263620032 is a wasteful number, since it uses less digits than its factorization.

51263620032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266998036 (or 266998026 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 51263620032 in words is "fifty-one billion, two hundred sixty-three million, six hundred twenty thousand, thirty-two".