2578156464 has 40 divisors (see below), whose sum is σ = 7172565232. Its totient is φ = 793278720.

The previous prime is 2578156459. The next prime is 2578156487. The reversal of 2578156464 is 4646518752.

2578156464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 2065207 + ... + 2066454.

Almost surely, 2^2578156464 is an apocalyptic number.

2578156464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2578156464 is an abundant number, since it is smaller than the sum of its proper divisors (4594408768).

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

2578156464 is a wasteful number, since it uses less digits than its factorization.

2578156464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131685 (or 4131679 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 48.

The square root of 2578156464 is about 50775.5498640832. The cubic root of 2578156464 is about 1371.2072162335.

The spelling of 2578156464 in words is "two billion, five hundred seventy-eight million, one hundred fifty-six thousand, four hundred sixty-four".