2151115161020 has 48 divisors (see below), whose sum is σ = 5202086174208. Its totient is φ = 731895228480.

The previous prime is 2151115161017. The next prime is 2151115161053. The reversal of 2151115161020 is 201615111512.

It is a happy number.

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, 58627112 + ... + 58663791.

It is an arithmetic number, because the mean of its divisors is an integer number (108376795296).

Almost surely, 2^{2151115161020} is an apocalyptic number.

2151115161020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151115161020 is an abundant number, since it is smaller than the sum of its proper divisors (3050971013188).

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

2151115161020 is a wasteful number, since it uses less digits than its factorization.

2151115161020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117291050 (or 117291048 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 26.

The spelling of 2151115161020 in words is "two trillion, one hundred fifty-one billion, one hundred fifteen million, one hundred sixty-one thousand, twenty".