121611646234431 has 12 divisors (see below), whose sum is σ = 175672663938408. Its totient is φ = 81069170597424.

The previous prime is 121611646234417. The next prime is 121611646234459. The reversal of 121611646234431 is 134432646116121.

121611646234431 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 1 + 16 + 4 + 623 + 4 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 121611646234431 - 2⁶ = 121611646234367 is a prime.

It is a super-2 number, since 2×121611646234431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121611646234231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 438205705 + ... + 438483138.

It is an arithmetic number, because the mean of its divisors is an integer number (14639388661534).

Almost surely, 2^{121611646234431} is an apocalyptic number.

121611646234431 is a deficient number, since it is larger than the sum of its proper divisors (54061017703977).

121611646234431 is a wasteful number, since it uses less digits than its factorization.

121611646234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876704262 (or 876704259 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The spelling of 121611646234431 in words is "one hundred twenty-one trillion, six hundred eleven billion, six hundred forty-six million, two hundred thirty-four thousand, four hundred thirty-one".