2165614345540 has 48 divisors (see below), whose sum is σ = 4577766177600. Its totient is φ = 860540837760.

The previous prime is 2165614345529. The next prime is 2165614345553. The reversal of 2165614345540 is 455434165612.

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, 7090911 + ... + 7390009.

It is an arithmetic number, because the mean of its divisors is an integer number (95370128700).

Almost surely, 2^{2165614345540} is an apocalyptic number.

2165614345540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2165614345540 is an abundant number, since it is smaller than the sum of its proper divisors (2412151832060).

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

2165614345540 is a wasteful number, since it uses less digits than its factorization.

2165614345540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301492 (or 301490 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 2165614345540 in words is "two trillion, one hundred sixty-five billion, six hundred fourteen million, three hundred forty-five thousand, five hundred forty".