2645686575728 has 40 divisors (see below), whose sum is σ = 5867417044608. Its totient is φ = 1132102245312.

The previous prime is 2645686575667. The next prime is 2645686575731. The reversal of 2645686575728 is 8275756865462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18296726 + ... + 18440757.

Almost surely, 2^{2645686575728} is an apocalyptic number.

2645686575728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2645686575728 is an abundant number, since it is smaller than the sum of its proper divisors (3221730468880).

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

2645686575728 is a wasteful number, since it uses less digits than its factorization.

2645686575728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36738141 (or 36738135 counting only the distinct ones).

The product of its digits is 1354752000, while the sum is 71.

The spelling of 2645686575728 in words is "two trillion, six hundred forty-five billion, six hundred eighty-six million, five hundred seventy-five thousand, seven hundred twenty-eight".