2165240456 has 96 divisors (see below), whose sum is σ = 4493361600. Its totient is φ = 976752000.

The previous prime is 2165240431. The next prime is 2165240471. The reversal of 2165240456 is 6540425612.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8626331 + ... + 8626581.

It is an arithmetic number, because the mean of its divisors is an integer number (46805850).

Almost surely, 2^2165240456 is an apocalyptic number.

It is an amenable number.

2165240456 is an abundant number, since it is smaller than the sum of its proper divisors (2328121144).

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

2165240456 is a wasteful number, since it uses less digits than its factorization.

2165240456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 2165240456 is about 46532.1443305593. The cubic root of 2165240456 is about 1293.7053604955.

The spelling of 2165240456 in words is "two billion, one hundred sixty-five million, two hundred forty thousand, four hundred fifty-six".