2578406557080 has 32 divisors (see below), whose sum is σ = 7735219671600. Its totient is φ = 687575081856.

The previous prime is 2578406557043. The next prime is 2578406557141. The reversal of 2578406557080 is 807556048752.

It is a super-3 number, since 3×2578406557080³ (a number of 38 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2578406557080.

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, 10743360535 + ... + 10743360774.

Almost surely, 2^{2578406557080} is an apocalyptic number.

2578406557080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578406557080 is an abundant number, since it is smaller than the sum of its proper divisors (5156813114520).

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

2578406557080 is a wasteful number, since it uses less digits than its factorization.

2578406557080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21486721323 (or 21486721319 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 57.

The spelling of 2578406557080 in words is "two trillion, five hundred seventy-eight billion, four hundred six million, five hundred fifty-seven thousand, eighty".