51753786240 has 128 divisors (see below), whose sum is σ = 177654909600. Its totient is φ = 12739387392.

The previous prime is 51753786221. The next prime is 51753786247. The reversal of 51753786240 is 4268735715.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×51753786240² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 51753786240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51753786247) 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, 1011775 + ... + 1061694.

Almost surely, 2^51753786240 is an apocalyptic number.

It is an amenable number.

51753786240 is an abundant number, since it is smaller than the sum of its proper divisors (125901123360).

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

51753786240 is a wasteful number, since it uses less digits than its factorization.

51753786240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073504 (or 2073492 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 51753786240 in words is "fifty-one billion, seven hundred fifty-three million, seven hundred eighty-six thousand, two hundred forty".