121579928063 has 8 divisors (see below), whose sum is σ = 134500715136. Its totient is φ = 108970485400.

The previous prime is 121579928047. The next prime is 121579928069. The reversal of 121579928063 is 360829975121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121579928063 - 2⁴ = 121579928047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121579927996 and 121579928014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121579928069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77835281 + ... + 77836842.

It is an arithmetic number, because the mean of its divisors is an integer number (16812589392).

Almost surely, 2^121579928063 is an apocalyptic number.

121579928063 is a deficient number, since it is larger than the sum of its proper divisors (12920787073).

121579928063 is a wasteful number, since it uses less digits than its factorization.

121579928063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155672205.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 121579928063 in words is "one hundred twenty-one billion, five hundred seventy-nine million, nine hundred twenty-eight thousand, sixty-three".