6115551655651 has 16 divisors (see below), whose sum is σ = 6274146130560. Its totient is φ = 5958163998720.

The previous prime is 6115551655627. The next prime is 6115551655669. The reversal of 6115551655651 is 1565561555116.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6115551655651 - 2⁹ = 6115551655139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6115551655751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27947995 + ... + 28165963.

It is an arithmetic number, because the mean of its divisors is an integer number (392134133160).

Almost surely, 2^{6115551655651} is an apocalyptic number.

6115551655651 is a deficient number, since it is larger than the sum of its proper divisors (158594474909).

6115551655651 is a wasteful number, since it uses less digits than its factorization.

6115551655651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220734.

The product of its digits is 3375000, while the sum is 52.

The spelling of 6115551655651 in words is "six trillion, one hundred fifteen billion, five hundred fifty-one million, six hundred fifty-five thousand, six hundred fifty-one".