2115587680 has 48 divisors (see below), whose sum is σ = 5261140080. Its totient is φ = 801695232.

The previous prime is 2115587657. The next prime is 2115587687. The reversal of 2115587680 is 867855112.

It is a super-2 number, since 2×2115587680² = 8951422463535564800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115587687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344919 + ... + 350998.

It is an arithmetic number, because the mean of its divisors is an integer number (109607085).

Almost surely, 2^2115587680 is an apocalyptic number.

2115587680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115587680 is an abundant number, since it is smaller than the sum of its proper divisors (3145552400).

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

2115587680 is a wasteful number, since it uses less digits than its factorization.

2115587680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695951 (or 695943 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 43.

The square root of 2115587680 is about 45995.5180425224. The cubic root of 2115587680 is about 1283.7398113462.

The spelling of 2115587680 in words is "two billion, one hundred fifteen million, five hundred eighty-seven thousand, six hundred eighty".