12939215401 has 4 divisors (see below), whose sum is σ = 14787674752. Its totient is φ = 11090756052.

The previous prime is 12939215383. The next prime is 12939215407. The reversal of 12939215401 is 10451293921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12939215401 - 2¹³ = 12939207209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12939215407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924229665 + ... + 924229678.

It is an arithmetic number, because the mean of its divisors is an integer number (3696918688).

Almost surely, 2^12939215401 is an apocalyptic number.

It is an amenable number.

12939215401 is a deficient number, since it is larger than the sum of its proper divisors (1848459351).

12939215401 is an equidigital number, since it uses as much as digits as its factorization.

12939215401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848459350.

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 12939215401 in words is "twelve billion, nine hundred thirty-nine million, two hundred fifteen thousand, four hundred one".