6497639057536 has 64 divisors (see below), whose sum is σ = 14951953568160. Its totient is φ = 2779738624000.

The previous prime is 6497639057491. The next prime is 6497639057557. The reversal of 6497639057536 is 6357509367946.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135705490 + ... + 135753361.

Almost surely, 2^{6497639057536} is an apocalyptic number.

It is an amenable number.

6497639057536 is an abundant number, since it is smaller than the sum of its proper divisors (8454314510624).

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

6497639057536 is a wasteful number, since it uses less digits than its factorization.

6497639057536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271458893 (or 271458881 counting only the distinct ones).

The product of its (nonzero) digits is 771573600, while the sum is 70.

The spelling of 6497639057536 in words is "six trillion, four hundred ninety-seven billion, six hundred thirty-nine million, fifty-seven thousand, five hundred thirty-six".