121734992566 has 32 divisors (see below), whose sum is σ = 200228914080. Its totient is φ = 55049414400.

The previous prime is 121734992563. The next prime is 121734992573. The reversal of 121734992566 is 665299437121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121734992563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6948730 + ... + 6966226.

It is an arithmetic number, because the mean of its divisors is an integer number (6257153565).

Almost surely, 2^121734992566 is an apocalyptic number.

121734992566 is a deficient number, since it is larger than the sum of its proper divisors (78493921514).

121734992566 is a wasteful number, since it uses less digits than its factorization.

121734992566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19120.

The product of its digits is 4898880, while the sum is 55.

The spelling of 121734992566 in words is "one hundred twenty-one billion, seven hundred thirty-four million, nine hundred ninety-two thousand, five hundred sixty-six".