12920971084 has 48 divisors (see below), whose sum is σ = 26316057600. Its totient is φ = 5436752256.

The previous prime is 12920971081. The next prime is 12920971087. The reversal of 12920971084 is 48017902921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12920971081) and next prime (12920971087).

It is a self number, because there is not a number n which added to its sum of digits gives 12920971084.

It is not an unprimeable number, because it can be changed into a prime (12920971081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379632 + ... + 412264.

It is an arithmetic number, because the mean of its divisors is an integer number (548251200).

Almost surely, 2^12920971084 is an apocalyptic number.

12920971084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12920971084 is an abundant number, since it is smaller than the sum of its proper divisors (13395086516).

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

12920971084 is a wasteful number, since it uses less digits than its factorization.

12920971084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32902 (or 32900 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 12920971084 in words is "twelve billion, nine hundred twenty million, nine hundred seventy-one thousand, eighty-four".