2646312645 has 16 divisors (see below), whose sum is σ = 4252277952. Its totient is φ = 1405307520.

The previous prime is 2646312629. The next prime is 2646312671. The reversal of 2646312645 is 5462136462.

It is not a de Polignac number, because 2646312645 - 2⁴ = 2646312629 is a prime.

It is a congruent number.

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, 375091 + ... + 382080.

It is an arithmetic number, because the mean of its divisors is an integer number (265767372).

Almost surely, 2^2646312645 is an apocalyptic number.

It is an amenable number.

2646312645 is a deficient number, since it is larger than the sum of its proper divisors (1605965307).

2646312645 is a wasteful number, since it uses less digits than its factorization.

2646312645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757412.

The product of its digits is 207360, while the sum is 39.

The square root of 2646312645 is about 51442.3234797963. The cubic root of 2646312645 is about 1383.1853612791.

The spelling of 2646312645 in words is "two billion, six hundred forty-six million, three hundred twelve thousand, six hundred forty-five".