12247847640 has 192 divisors, whose sum is σ = 47886508800. Its totient is φ = 2652155136.

The previous prime is 12247847639. The next prime is 12247847657. The reversal of 12247847640 is 4674874221.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80022 + ... + 175781.

It is an arithmetic number, because the mean of its divisors is an integer number (249408900).

Almost surely, 2^12247847640 is an apocalyptic number.

12247847640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12247847640 is an abundant number, since it is smaller than the sum of its proper divisors (35638661160).

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

12247847640 is a wasteful number, since it uses less digits than its factorization.

12247847640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255846 (or 255839 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 12247847640 in words is "twelve billion, two hundred forty-seven million, eight hundred forty-seven thousand, six hundred forty".