12155550772495 has 16 divisors (see below), whose sum is σ = 15714874677600. Its totient is φ = 8972885061504.

The previous prime is 12155550772441. The next prime is 12155550772591. The reversal of 12155550772495 is 59427705555121.

12155550772495 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12155550772495 - 2⁷ = 12155550772367 is a prime.

It is a super-3 number, since 3×12155550772495³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36517029 + ... + 36848398.

It is an arithmetic number, because the mean of its divisors is an integer number (982179667350).

Almost surely, 2^{12155550772495} is an apocalyptic number.

12155550772495 is a deficient number, since it is larger than the sum of its proper divisors (3559323905105).

12155550772495 is a wasteful number, since it uses less digits than its factorization.

12155550772495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73367994.

The product of its (nonzero) digits is 22050000, while the sum is 58.

The spelling of 12155550772495 in words is "twelve trillion, one hundred fifty-five billion, five hundred fifty million, seven hundred seventy-two thousand, four hundred ninety-five".