51806089632 has 96 divisors (see below), whose sum is σ = 149794444800. Its totient is φ = 15546366720.

The previous prime is 51806089613. The next prime is 51806089637. The reversal of 51806089632 is 23698060815.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (51806089637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129382 + ... + 346917.

It is an arithmetic number, because the mean of its divisors is an integer number (1560358800).

Almost surely, 2^51806089632 is an apocalyptic number.

It is an amenable number.

51806089632 is an abundant number, since it is smaller than the sum of its proper divisors (97988355168).

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

51806089632 is a wasteful number, since it uses less digits than its factorization.

51806089632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476426 (or 476418 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 51806089632 in words is "fifty-one billion, eight hundred six million, eighty-nine thousand, six hundred thirty-two".