2645898857815 has 32 divisors (see below), whose sum is σ = 3197866573440. Its totient is φ = 2101592064000.

The previous prime is 2645898857807. The next prime is 2645898857831. The reversal of 2645898857815 is 5187588985462.

2645898857815 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 2645898857815 - 2³ = 2645898857807 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 711452526 + ... + 711456244.

It is an arithmetic number, because the mean of its divisors is an integer number (99933330420).

Almost surely, 2^{2645898857815} is an apocalyptic number.

2645898857815 is a deficient number, since it is larger than the sum of its proper divisors (551967715625).

2645898857815 is a wasteful number, since it uses less digits than its factorization.

2645898857815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643.

The product of its digits is 1548288000, while the sum is 76.

The spelling of 2645898857815 in words is "two trillion, six hundred forty-five billion, eight hundred ninety-eight million, eight hundred fifty-seven thousand, eight hundred fifteen".