121844959268951 has 64 divisors (see below), whose sum is σ = 134897127321600. Its totient is φ = 109688573170176.

The previous prime is 121844959268941. The next prime is 121844959268993. The reversal of 121844959268951 is 159862959448121.

It is a cyclic number.

It is not a de Polignac number, because 121844959268951 - 2¹⁴ = 121844959252567 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 (121844959268941) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1651941365 + ... + 1652015121.

It is an arithmetic number, because the mean of its divisors is an integer number (2107767614400).

Almost surely, 2^{121844959268951} is an apocalyptic number.

121844959268951 is a deficient number, since it is larger than the sum of its proper divisors (13052168052649).

121844959268951 is a wasteful number, since it uses less digits than its factorization.

121844959268951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74288.

The product of its digits is 447897600, while the sum is 74.

The spelling of 121844959268951 in words is "one hundred twenty-one trillion, eight hundred forty-four billion, nine hundred fifty-nine million, two hundred sixty-eight thousand, nine hundred fifty-one".