51263762620 has 24 divisors (see below), whose sum is σ = 123033030624. Its totient is φ = 17576147136.

The previous prime is 51263762609. The next prime is 51263762621. The reversal of 51263762620 is 2626736215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51263762621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183084727 + ... + 183085006.

It is an arithmetic number, because the mean of its divisors is an integer number (5126376276).

Almost surely, 2^51263762620 is an apocalyptic number.

It is an amenable number.

51263762620 is an abundant number, since it is smaller than the sum of its proper divisors (71769268004).

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

51263762620 is a wasteful number, since it uses less digits than its factorization.

51263762620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366169749 (or 366169747 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 51263762620 in words is "fifty-one billion, two hundred sixty-three million, seven hundred sixty-two thousand, six hundred twenty".