2155514058618 has 32 divisors (see below), whose sum is σ = 4324119028416. Its totient is φ = 716324235648.

The previous prime is 2155514058611. The next prime is 2155514058619. The reversal of 2155514058618 is 8168504155512.

It is not an unprimeable number, because it can be changed into a prime (2155514058611) 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, 6193246 + ... + 6532022.

It is an arithmetic number, because the mean of its divisors is an integer number (135128719638).

Almost surely, 2^{2155514058618} is an apocalyptic number.

2155514058618 is an abundant number, since it is smaller than the sum of its proper divisors (2168604969798).

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

2155514058618 is a wasteful number, since it uses less digits than its factorization.

2155514058618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341998.

The product of its (nonzero) digits is 1920000, while the sum is 51.

The spelling of 2155514058618 in words is "two trillion, one hundred fifty-five billion, five hundred fourteen million, fifty-eight thousand, six hundred eighteen".