121765121676 has 36 divisors (see below), whose sum is σ = 335776548744. Its totient is φ = 36898521600.

The previous prime is 121765121669. The next prime is 121765121707. The reversal of 121765121676 is 676121567121.

121765121676 is a `hidden beast` number, since 1 + 2 + 1 + 76 + 512 + 1 + 67 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153743445 + ... + 153744236.

It is an arithmetic number, because the mean of its divisors is an integer number (9327126354).

Almost surely, 2^121765121676 is an apocalyptic number.

It is an amenable number.

121765121676 is an abundant number, since it is smaller than the sum of its proper divisors (214011427068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121765121676 is a wasteful number, since it uses less digits than its factorization.

121765121676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307487702 (or 307487697 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

Adding to 121765121676 its reverse (676121567121), we get a palindrome (797886688797).

The spelling of 121765121676 in words is "one hundred twenty-one billion, seven hundred sixty-five million, one hundred twenty-one thousand, six hundred seventy-six".