6415734661656 has 64 divisors (see below), whose sum is σ = 16984422403200. Its totient is φ = 2012590422528.

The previous prime is 6415734661549. The next prime is 6415734661703. The reversal of 6415734661656 is 6561664375146.

It is a self number, because there is not a number n which added to its sum of digits gives 6415734661656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3641755 + ... + 5108213.

It is an arithmetic number, because the mean of its divisors is an integer number (265381600050).

Almost surely, 2^{6415734661656} is an apocalyptic number.

It is an amenable number.

6415734661656 is an abundant number, since it is smaller than the sum of its proper divisors (10568687741544).

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

6415734661656 is a wasteful number, since it uses less digits than its factorization.

6415734661656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477208 (or 1477204 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 60.

The spelling of 6415734661656 in words is "six trillion, four hundred fifteen billion, seven hundred thirty-four million, six hundred sixty-one thousand, six hundred fifty-six".