13155420567172 has 12 divisors (see below), whose sum is σ = 24792907992076. Its totient is φ = 6071732569440.

The previous prime is 13155420567151. The next prime is 13155420567197. The reversal of 13155420567172 is 27176502455131.

It can be written as a sum of positive squares in 2 ways, for example, as 2841200163396 + 10314220403776 = 1685586^2 + 3211576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126494428479 + ... + 126494428582.

Almost surely, 2^{13155420567172} is an apocalyptic number.

It is an amenable number.

13155420567172 is a deficient number, since it is larger than the sum of its proper divisors (11637487424904).

13155420567172 is a wasteful number, since it uses less digits than its factorization.

13155420567172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252988857078 (or 252988857076 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 13155420567172 in words is "thirteen trillion, one hundred fifty-five billion, four hundred twenty million, five hundred sixty-seven thousand, one hundred seventy-two".