51200388768 has 48 divisors (see below), whose sum is σ = 134412790176. Its totient is φ = 17065301760.

The previous prime is 51200388761. The next prime is 51200388787. The reversal of 51200388768 is 86788300215.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is not an unprimeable number, because it can be changed into a prime (51200388761) 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, 1896130 + ... + 1922942.

It is an arithmetic number, because the mean of its divisors is an integer number (2800266462).

Almost surely, 2^51200388768 is an apocalyptic number.

It is an amenable number.

51200388768 is an abundant number, since it is smaller than the sum of its proper divisors (83212401408).

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

51200388768 is a wasteful number, since it uses less digits than its factorization.

51200388768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46717 (or 46709 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 51200388768 in words is "fifty-one billion, two hundred million, three hundred eighty-eight thousand, seven hundred sixty-eight".