6155555556 has 12 divisors (see below), whose sum is σ = 14362962992. Its totient is φ = 2051851848.

The previous prime is 6155555537. The next prime is 6155555563. The reversal of 6155555556 is 6555555516.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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, 256481470 + ... + 256481493.

Almost surely, 2^6155555556 is an apocalyptic number.

It is an amenable number.

6155555556 is an abundant number, since it is smaller than the sum of its proper divisors (8207407436).

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

6155555556 is a wasteful number, since it uses less digits than its factorization.

6155555556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512962970 (or 512962968 counting only the distinct ones).

The product of its digits is 2812500, while the sum is 48.

The square root of 6155555556 is about 78457.3486424312. The cubic root of 6155555556 is about 1832.6903163223.

The spelling of 6155555556 in words is "six billion, one hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-six".