2651331465 has 24 divisors (see below), whose sum is σ = 4615383240. Its totient is φ = 1407969024.

The previous prime is 2651331433. The next prime is 2651331469. The reversal of 2651331465 is 5641331562.

2651331465 is a `hidden beast` number, since 2 + 65 + 133 + 1 + 465 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 276523641 + 2374807824 = 16629^2 + 48732^2 .

It is not a de Polignac number, because 2651331465 - 2⁵ = 2651331433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2651331469) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 115950 + ... + 136919.

It is an arithmetic number, because the mean of its divisors is an integer number (192307635).

Almost surely, 2^2651331465 is an apocalyptic number.

It is an amenable number.

2651331465 is a deficient number, since it is larger than the sum of its proper divisors (1964051775).

2651331465 is a wasteful number, since it uses less digits than its factorization.

2651331465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253113 (or 253110 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 2651331465 is about 51491.0814122213. The cubic root of 2651331465 is about 1384.0592280959.

The spelling of 2651331465 in words is "two billion, six hundred fifty-one million, three hundred thirty-one thousand, four hundred sixty-five".