6499081961512 has 16 divisors (see below), whose sum is σ = 13926604203360. Its totient is φ = 2785320840624.

The previous prime is 6499081961507. The next prime is 6499081961543. The reversal of 6499081961512 is 2151691809946.

It is a super-2 number, since 2×6499081961512² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58027517458 + ... + 58027517569.

It is an arithmetic number, because the mean of its divisors is an integer number (870412762710).

Almost surely, 2^{6499081961512} is an apocalyptic number.

It is an amenable number.

6499081961512 is an abundant number, since it is smaller than the sum of its proper divisors (7427522241848).

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

6499081961512 is a wasteful number, since it uses less digits than its factorization.

6499081961512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116055035040 (or 116055035036 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 61.

The spelling of 6499081961512 in words is "six trillion, four hundred ninety-nine billion, eighty-one million, nine hundred sixty-one thousand, five hundred twelve".