2166415240560 has 40 divisors (see below), whose sum is σ = 6715887246480. Its totient is φ = 577710730752.

The previous prime is 2166415240553. The next prime is 2166415240571. The reversal of 2166415240560 is 650425146612.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2166415240560² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4513364845 + ... + 4513365324.

It is an arithmetic number, because the mean of its divisors is an integer number (167897181162).

Almost surely, 2^{2166415240560} is an apocalyptic number.

2166415240560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2166415240560 is an abundant number, since it is smaller than the sum of its proper divisors (4549472005920).

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

2166415240560 is a wasteful number, since it uses less digits than its factorization.

2166415240560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9026730185 (or 9026730179 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 2166415240560 in words is "two trillion, one hundred sixty-six billion, four hundred fifteen million, two hundred forty thousand, five hundred sixty".