51620125216 has 24 divisors (see below), whose sum is σ = 110865951504. Its totient is φ = 23463693120.

The previous prime is 51620125211. The next prime is 51620125241. The reversal of 51620125216 is 61252102615.

It is not an unprimeable number, because it can be changed into a prime (51620125211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73323690 + ... + 73324393.

It is an arithmetic number, because the mean of its divisors is an integer number (4619414646).

Almost surely, 2^51620125216 is an apocalyptic number.

It is an amenable number.

51620125216 is an abundant number, since it is smaller than the sum of its proper divisors (59245826288).

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

51620125216 is a wasteful number, since it uses less digits than its factorization.

51620125216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146648104 (or 146648096 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 51620125216 in words is "fifty-one billion, six hundred twenty million, one hundred twenty-five thousand, two hundred sixteen".