12401555215 has 32 divisors (see below), whose sum is σ = 17606160000. Its totient is φ = 8205163008.

The previous prime is 12401555203. The next prime is 12401555251. The reversal of 12401555215 is 51255510421.

It is not a de Polignac number, because 12401555215 - 2⁵ = 12401555183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1975101 + ... + 1981369.

It is an arithmetic number, because the mean of its divisors is an integer number (550192500).

Almost surely, 2^12401555215 is an apocalyptic number.

12401555215 is a deficient number, since it is larger than the sum of its proper divisors (5204604785).

12401555215 is a wasteful number, since it uses less digits than its factorization.

12401555215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8259.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 12401555215 in words is "twelve billion, four hundred one million, five hundred fifty-five thousand, two hundred fifteen".