2215516140 has 36 divisors (see below), whose sum is σ = 6720399504. Its totient is φ = 590804256.

The previous prime is 2215516129. The next prime is 2215516159. The reversal of 2215516140 is 416155122.

2215516140 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 516 + 140 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6154032 + ... + 6154391.

It is an arithmetic number, because the mean of its divisors is an integer number (186677764).

Almost surely, 2^2215516140 is an apocalyptic number.

2215516140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215516140 is an abundant number, since it is smaller than the sum of its proper divisors (4504883364).

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

2215516140 is a wasteful number, since it uses less digits than its factorization.

2215516140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12308438 (or 12308433 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2215516140 is about 47069.2695928033. The cubic root of 2215516140 is about 1303.6418865247.

The spelling of 2215516140 in words is "two billion, two hundred fifteen million, five hundred sixteen thousand, one hundred forty".