121727368659 has 32 divisors (see below), whose sum is σ = 181203160320. Its totient is φ = 72170888832.

The previous prime is 121727368657. The next prime is 121727368669. The reversal of 121727368659 is 956863727121.

It is not a de Polignac number, because 121727368659 - 2¹ = 121727368657 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 121727368599 and 121727368608.

It is not an unprimeable number, because it can be changed into a prime (121727368657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412944 + ... + 643410.

It is an arithmetic number, because the mean of its divisors is an integer number (5662598760).

Almost surely, 2^121727368659 is an apocalyptic number.

121727368659 is a deficient number, since it is larger than the sum of its proper divisors (59475791661).

121727368659 is a wasteful number, since it uses less digits than its factorization.

121727368659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230979.

The product of its digits is 7620480, while the sum is 57.

The spelling of 121727368659 in words is "one hundred twenty-one billion, seven hundred twenty-seven million, three hundred sixty-eight thousand, six hundred fifty-nine".