121839095078050 has 144 divisors (see below), whose sum is σ = 264070376048160. Its totient is φ = 41702070896640.

The previous prime is 121839095078039. The next prime is 121839095078069. The reversal of 121839095078050 is 50870590938121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10754614786 + ... + 10754626114.

It is an arithmetic number, because the mean of its divisors is an integer number (1833822055890).

Almost surely, 2^{121839095078050} is an apocalyptic number.

121839095078050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121839095078050 is an abundant number, since it is smaller than the sum of its proper divisors (142231280970110).

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

121839095078050 is a wasteful number, since it uses less digits than its factorization.

121839095078050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18465 (or 18453 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 58.

The spelling of 121839095078050 in words is "one hundred twenty-one trillion, eight hundred thirty-nine billion, ninety-five million, seventy-eight thousand, fifty".