2578912567 has 24 divisors (see below), whose sum is σ = 3244693536. Its totient is φ = 2006400000.

The previous prime is 2578912561. The next prime is 2578912571. The reversal of 2578912567 is 7652198752.

It is a happy number.

It is not a de Polignac number, because 2578912567 - 2⁷ = 2578912439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578912561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 642567 + ... + 646567.

It is an arithmetic number, because the mean of its divisors is an integer number (135195564).

Almost surely, 2^2578912567 is an apocalyptic number.

2578912567 is a deficient number, since it is larger than the sum of its proper divisors (665780969).

2578912567 is a wasteful number, since it uses less digits than its factorization.

2578912567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4791 (or 4780 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 52.

The square root of 2578912567 is about 50782.9948604845. The cubic root of 2578912567 is about 1371.3412490289.

The spelling of 2578912567 in words is "two billion, five hundred seventy-eight million, nine hundred twelve thousand, five hundred sixty-seven".