51964925400 has 72 divisors (see below), whose sum is σ = 174515547180. Its totient is φ = 13857312960.

The previous prime is 51964925393. The next prime is 51964925401. The reversal of 51964925400 is 452946915.

51964925400 is a `hidden beast` number, since 5 + 19 + 6 + 4 + 92 + 540 + 0 = 666.

51964925400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51964925401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14432902 + ... + 14436501.

Almost surely, 2^51964925400 is an apocalyptic number.

51964925400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51964925400 is an abundant number, since it is smaller than the sum of its proper divisors (122550621780).

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

51964925400 is a wasteful number, since it uses less digits than its factorization.

51964925400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28869425 (or 28869413 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 51964925400 in words is "fifty-one billion, nine hundred sixty-four million, nine hundred twenty-five thousand, four hundred".