12579719900 has 72 divisors (see below), whose sum is σ = 29913752064. Its totient is φ = 4553841600.

The previous prime is 12579719879. The next prime is 12579719921. The reversal of 12579719900 is 991797521.

It is an interprime number because it is at equal distance from previous prime (12579719879) and next prime (12579719921).

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219659 + ... + 270941.

Almost surely, 2^12579719900 is an apocalyptic number.

12579719900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12579719900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14956876032).

12579719900 is an abundant number, since it is smaller than the sum of its proper divisors (17334032164).

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

12579719900 is a wasteful number, since it uses less digits than its factorization.

12579719900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51531 (or 51524 counting only the distinct ones).

The product of its (nonzero) digits is 357210, while the sum is 50.

The spelling of 12579719900 in words is "twelve billion, five hundred seventy-nine million, seven hundred nineteen thousand, nine hundred".