6400788237272 has 128 divisors (see below), whose sum is σ = 15056346009600. Its totient is φ = 2509390195200.

The previous prime is 6400788237247. The next prime is 6400788237287. The reversal of 6400788237272 is 2727328870046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2083388 + ... + 4140299.

It is an arithmetic number, because the mean of its divisors is an integer number (117627703200).

Almost surely, 2^{6400788237272} is an apocalyptic number.

6400788237272 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

6400788237272 is an abundant number, since it is smaller than the sum of its proper divisors (8655557772328).

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

6400788237272 is a wasteful number, since it uses less digits than its factorization.

6400788237272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223777 (or 6223773 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 56.

The spelling of 6400788237272 in words is "six trillion, four hundred billion, seven hundred eighty-eight million, two hundred thirty-seven thousand, two hundred seventy-two".