12617746380 has 48 divisors (see below), whose sum is σ = 39255212640. Its totient is φ = 3364732224.

The previous prime is 12617746373. The next prime is 12617746399. The reversal of 12617746380 is 8364771621.

12617746380 is a `hidden beast` number, since 1 + 2 + 6 + 1 + 7 + 7 + 4 + 638 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 11682559 + ... + 11683638.

It is an arithmetic number, because the mean of its divisors is an integer number (817816930).

Almost surely, 2^12617746380 is an apocalyptic number.

12617746380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12617746380 is an abundant number, since it is smaller than the sum of its proper divisors (26637466260).

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

12617746380 is a wasteful number, since it uses less digits than its factorization.

12617746380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23366215 (or 23366207 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 12617746380 in words is "twelve billion, six hundred seventeen million, seven hundred forty-six thousand, three hundred eighty".