2678636594564 has 12 divisors (see below), whose sum is σ = 5357273189184. Its totient is φ = 1147987111944.

The previous prime is 2678636594549. The next prime is 2678636594593. The reversal of 2678636594564 is 4654956368762.

2678636594564 is an admirable number.

It is a hoax number, since the sum of its digits (71) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47832796304 + ... + 47832796359.

It is an arithmetic number, because the mean of its divisors is an integer number (446439432432).

Almost surely, 2^{2678636594564} is an apocalyptic number.

It is an amenable number.

2678636594564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2678636594564 is a wasteful number, since it uses less digits than its factorization.

2678636594564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95665592674 (or 95665592672 counting only the distinct ones).

The product of its digits is 1567641600, while the sum is 71.

The spelling of 2678636594564 in words is "two trillion, six hundred seventy-eight billion, six hundred thirty-six million, five hundred ninety-four thousand, five hundred sixty-four".