12038621952 has 72 divisors (see below), whose sum is σ = 36617491456. Its totient is φ = 3439604736.

The previous prime is 12038621941. The next prime is 12038621989. The reversal of 12038621952 is 25912683021.

It is a self number, because there is not a number n which added to its sum of digits gives 12038621952.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114288 + ... + 1125039.

Almost surely, 2^12038621952 is an apocalyptic number.

12038621952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12038621952 is an abundant number, since it is smaller than the sum of its proper divisors (24578869504).

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

12038621952 is an equidigital number, since it uses as much as digits as its factorization.

12038621952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239353 (or 2239339 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 12038621952 in words is "twelve billion, thirty-eight million, six hundred twenty-one thousand, nine hundred fifty-two".