12578739380 has 12 divisors (see below), whose sum is σ = 26415352740. Its totient is φ = 5031495744.

The previous prime is 12578739379. The next prime is 12578739403. The reversal of 12578739380 is 8393787521.

It can be written as a sum of positive squares in 2 ways, for example, as 5976526864 + 6602212516 = 77308^2 + 81254^2 .

It is a congruent number.

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, 314468465 + ... + 314468504.

It is an arithmetic number, because the mean of its divisors is an integer number (2201279395).

Almost surely, 2^12578739380 is an apocalyptic number.

12578739380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12578739380 is an abundant number, since it is smaller than the sum of its proper divisors (13836613360).

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

12578739380 is a wasteful number, since it uses less digits than its factorization.

12578739380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628936978 (or 628936976 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 12578739380 in words is "twelve billion, five hundred seventy-eight million, seven hundred thirty-nine thousand, three hundred eighty".