6556215166426 has 32 divisors (see below), whose sum is σ = 10347233803200. Its totient is φ = 3111484291200.

The previous prime is 6556215166381. The next prime is 6556215166433. The reversal of 6556215166426 is 6246615126556.

It is a super-2 number, since 2×6556215166426² (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 15 ways as a sum of consecutive naturals, for example, 44523261 + ... + 44670271.

It is an arithmetic number, because the mean of its divisors is an integer number (323351056350).

Almost surely, 2^{6556215166426} is an apocalyptic number.

6556215166426 is a deficient number, since it is larger than the sum of its proper divisors (3791018636774).

6556215166426 is a wasteful number, since it uses less digits than its factorization.

6556215166426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161790.

The product of its digits is 15552000, while the sum is 55.

The spelling of 6556215166426 in words is "six trillion, five hundred fifty-six billion, two hundred fifteen million, one hundred sixty-six thousand, four hundred twenty-six".