6561508296408 has 32 divisors (see below), whose sum is σ = 17665599260400. Its totient is φ = 2018925629568.

The previous prime is 6561508296379. The next prime is 6561508296451. The reversal of 6561508296408 is 8046928051656.

It is a super-2 number, since 2×6561508296408² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

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, 10515237343 + ... + 10515237966.

Almost surely, 2^{6561508296408} is an apocalyptic number.

It is an amenable number.

6561508296408 is an abundant number, since it is smaller than the sum of its proper divisors (11104090963992).

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

6561508296408 is a wasteful number, since it uses less digits than its factorization.

6561508296408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21030475331 (or 21030475327 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 60.

The spelling of 6561508296408 in words is "six trillion, five hundred sixty-one billion, five hundred eight million, two hundred ninety-six thousand, four hundred eight".