2645012745 has 64 divisors (see below), whose sum is σ = 5028583680. Its totient is φ = 1314432000.

The previous prime is 2645012737. The next prime is 2645012759. The reversal of 2645012745 is 5472105462.

It is a happy number.

2645012745 is a `hidden beast` number, since 2 + 645 + 0 + 1 + 2 + 7 + 4 + 5 = 666.

2645012745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2645012745 - 2³ = 2645012737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 226090 + ... + 237500.

It is an arithmetic number, because the mean of its divisors is an integer number (78571620).

Almost surely, 2^2645012745 is an apocalyptic number.

It is an amenable number.

2645012745 is a deficient number, since it is larger than the sum of its proper divisors (2383570935).

2645012745 is a wasteful number, since it uses less digits than its factorization.

2645012745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11543 (or 11537 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 2645012745 is about 51429.6873896780. The cubic root of 2645012745 is about 1382.9588451952.

The spelling of 2645012745 in words is "two billion, six hundred forty-five million, twelve thousand, seven hundred forty-five".