51365207040 has 176 divisors, whose sum is σ = 187758569472. Its totient is φ = 11740594176.

The previous prime is 51365206961. The next prime is 51365207041. The reversal of 51365207040 is 4070256315.

51365207040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51365206992 and 51365207010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51365207041) 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, 131344 + ... + 346383.

Almost surely, 2^51365207040 is an apocalyptic number.

It is an amenable number.

51365207040 is an abundant number, since it is smaller than the sum of its proper divisors (136393362432).

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

51365207040 is a wasteful number, since it uses less digits than its factorization.

51365207040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477762 (or 477744 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 51365207040 in words is "fifty-one billion, three hundred sixty-five million, two hundred seven thousand, forty".