12397660740 has 576 divisors, whose sum is σ = 43677204480. Its totient is φ = 2939328000.

The previous prime is 12397660727. The next prime is 12397660757. The reversal of 12397660740 is 4706679321.

12397660740 is a `hidden beast` number, since 1 + 2 + 39 + 7 + 6 + 607 + 4 + 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 191 ways as a sum of consecutive naturals, for example, 174614905 + ... + 174614975.

It is an arithmetic number, because the mean of its divisors is an integer number (75828480).

Almost surely, 2^12397660740 is an apocalyptic number.

12397660740 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 12397660740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21838602240).

12397660740 is an abundant number, since it is smaller than the sum of its proper divisors (31279543740).

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

12397660740 is a wasteful number, since it uses less digits than its factorization.

12397660740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 12397660740 in words is "twelve billion, three hundred ninety-seven million, six hundred sixty thousand, seven hundred forty".