121632108687 has 6 divisors (see below), whose sum is σ = 175690823672. Its totient is φ = 81088072452.

The previous prime is 121632108683. The next prime is 121632108701. The reversal of 121632108687 is 786801236121.

121632108687 is a `hidden beast` number, since 1 + 2 + 1 + 632 + 1 + 0 + 8 + 6 + 8 + 7 = 666.

It is not a de Polignac number, because 121632108687 - 2² = 121632108683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121632108683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6757339363 + ... + 6757339380.

Almost surely, 2^121632108687 is an apocalyptic number.

121632108687 is a deficient number, since it is larger than the sum of its proper divisors (54058714985).

121632108687 is a wasteful number, since it uses less digits than its factorization.

121632108687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13514678749 (or 13514678746 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 121632108687 in words is "one hundred twenty-one billion, six hundred thirty-two million, one hundred eight thousand, six hundred eighty-seven".