12215255613431 has 8 divisors (see below), whose sum is σ = 13203432696384. Its totient is φ = 11234013107040.

The previous prime is 12215255613413. The next prime is 12215255613437. The reversal of 12215255613431 is 13431655251221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12215255613431 - 2²² = 12215251419127 is a prime.

It is a super-4 number, since 4×12215255613431⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215255613437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1733640476 + ... + 1733647521.

It is an arithmetic number, because the mean of its divisors is an integer number (1650429087048).

Almost surely, 2^{12215255613431} is an apocalyptic number.

12215255613431 is a deficient number, since it is larger than the sum of its proper divisors (988177082953).

12215255613431 is a wasteful number, since it uses less digits than its factorization.

12215255613431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467288281.

The product of its digits is 216000, while the sum is 41.

The spelling of 12215255613431 in words is "twelve trillion, two hundred fifteen billion, two hundred fifty-five million, six hundred thirteen thousand, four hundred thirty-one".