51013605620 has 96 divisors (see below), whose sum is σ = 109887321600. Its totient is φ = 19888349184.

The previous prime is 51013605613. The next prime is 51013605631. The reversal of 51013605620 is 2650631015.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 61984529 + ... + 61985351.

It is an arithmetic number, because the mean of its divisors is an integer number (1144659600).

Almost surely, 2^51013605620 is an apocalyptic number.

It is an amenable number.

51013605620 is an abundant number, since it is smaller than the sum of its proper divisors (58873715980).

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

51013605620 is a wasteful number, since it uses less digits than its factorization.

51013605620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 51013605620 in words is "fifty-one billion, thirteen million, six hundred five thousand, six hundred twenty".