6251638847496 has 64 divisors (see below), whose sum is σ = 17867379146880. Its totient is φ = 1785627141120.

The previous prime is 6251638847477. The next prime is 6251638847497. The reversal of 6251638847496 is 6947488361526.

It is a super-2 number, since 2×6251638847496² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6251638847496.

It is not an unprimeable number, because it can be changed into a prime (6251638847497) 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, 5243215 + ... + 6324126.

It is an arithmetic number, because the mean of its divisors is an integer number (279177799170).

Almost surely, 2^{6251638847496} is an apocalyptic number.

It is an amenable number.

6251638847496 is an abundant number, since it is smaller than the sum of its proper divisors (11615740299384).

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

6251638847496 is a wasteful number, since it uses less digits than its factorization.

6251638847496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11570574 (or 11570570 counting only the distinct ones).

The product of its digits is 418037760, while the sum is 69.

The spelling of 6251638847496 in words is "six trillion, two hundred fifty-one billion, six hundred thirty-eight million, eight hundred forty-seven thousand, four hundred ninety-six".