2661516253100 has 18 divisors (see below), whose sum is σ = 5775490269444. Its totient is φ = 1064606501200.

The previous prime is 2661516253063. The next prime is 2661516253141. The reversal of 2661516253100 is 13526151662.

It is a super-2 number, since 2×2661516253100² (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 5 ways as a sum of consecutive naturals, for example, 13307581166 + ... + 13307581365.

Almost surely, 2^{2661516253100} is an apocalyptic number.

2661516253100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2661516253100 is an abundant number, since it is smaller than the sum of its proper divisors (3113974016344).

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

2661516253100 is a wasteful number, since it uses less digits than its factorization.

2661516253100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26615162545 (or 26615162538 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 2661516253100 in words is "two trillion, six hundred sixty-one billion, five hundred sixteen million, two hundred fifty-three thousand, one hundred".