12013855038 has 40 divisors (see below), whose sum is σ = 26927659440. Its totient is φ = 4003469280.

The previous prime is 12013855031. The next prime is 12013855057. The reversal of 12013855038 is 83055831021.

12013855038 is a `hidden beast` number, since 12 + 0 + 138 + 5 + 503 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12013854993 and 12013855011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013855031) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 702898 + ... + 719786.

It is an arithmetic number, because the mean of its divisors is an integer number (673191486).

Almost surely, 2^12013855038 is an apocalyptic number.

12013855038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12013855038 is an abundant number, since it is smaller than the sum of its proper divisors (14913804402).

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

12013855038 is a wasteful number, since it uses less digits than its factorization.

12013855038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21294 (or 21285 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 12013855038 in words is "twelve billion, thirteen million, eight hundred fifty-five thousand, thirty-eight".