2578959540 has 48 divisors (see below), whose sum is σ = 8023431360. Its totient is φ = 687722400.

The previous prime is 2578959499. The next prime is 2578959599. The reversal of 2578959540 is 459598752.

2578959540 is a `hidden beast` number, since 2 + 5 + 7 + 8 + 9 + 595 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2387386 + ... + 2388465.

It is an arithmetic number, because the mean of its divisors is an integer number (167154820).

Almost surely, 2^2578959540 is an apocalyptic number.

2578959540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578959540 is an abundant number, since it is smaller than the sum of its proper divisors (5444471820).

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

2578959540 is a wasteful number, since it uses less digits than its factorization.

2578959540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775869 (or 4775861 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The square root of 2578959540 is about 50783.4573458720. The cubic root of 2578959540 is about 1371.3495749699.

The spelling of 2578959540 in words is "two billion, five hundred seventy-eight million, nine hundred fifty-nine thousand, five hundred forty".