51625079904 has 48 divisors (see below), whose sum is σ = 136831548672. Its totient is φ = 17041285248.

The previous prime is 51625079903. The next prime is 51625079917. The reversal of 51625079904 is 40997052615.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51625079903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600604 + ... + 2620379.

It is an arithmetic number, because the mean of its divisors is an integer number (2850657264).

Almost surely, 2^51625079904 is an apocalyptic number.

It is an amenable number.

51625079904 is an abundant number, since it is smaller than the sum of its proper divisors (85206468768).

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

51625079904 is a wasteful number, since it uses less digits than its factorization.

51625079904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221099 (or 5221091 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 51625079904 in words is "fifty-one billion, six hundred twenty-five million, seventy-nine thousand, nine hundred four".