2157360465 has 64 divisors (see below), whose sum is σ = 3797256960. Its totient is φ = 1039426560.

The previous prime is 2157360451. The next prime is 2157360473. The reversal of 2157360465 is 5640637512.

It is not a de Polignac number, because 2157360465 - 2⁵ = 2157360433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3484926 + ... + 3485544.

It is an arithmetic number, because the mean of its divisors is an integer number (59332140).

Almost surely, 2^2157360465 is an apocalyptic number.

It is an amenable number.

2157360465 is a deficient number, since it is larger than the sum of its proper divisors (1639896495).

2157360465 is a wasteful number, since it uses less digits than its factorization.

2157360465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 2157360465 is about 46447.3945986209. The cubic root of 2157360465 is about 1292.1340525616.

Adding to 2157360465 its reverse (5640637512), we get a palindrome (7797997977).

The spelling of 2157360465 in words is "two billion, one hundred fifty-seven million, three hundred sixty thousand, four hundred sixty-five".