51365460359040 has 64 divisors (see below), whose sum is σ = 163727404900560. Its totient is φ = 13697456095232.

The previous prime is 51365460359039. The next prime is 51365460359047. The reversal of 51365460359040 is 4095306456315.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×51365460359040² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51365460359047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13376420049 + ... + 13376423888.

Almost surely, 2^{51365460359040} is an apocalyptic number.

It is an amenable number.

51365460359040 is an abundant number, since it is smaller than the sum of its proper divisors (112361944541520).

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

51365460359040 is a wasteful number, since it uses less digits than its factorization.

51365460359040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26752843959 (or 26752843947 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 51.

The spelling of 51365460359040 in words is "fifty-one trillion, three hundred sixty-five billion, four hundred sixty million, three hundred fifty-nine thousand, forty".