121574015406255 has 16 divisors (see below), whose sum is σ = 194518596063744. Its totient is φ = 64839417745440.

The previous prime is 121574015406241. The next prime is 121574015406299. The reversal of 121574015406255 is 552604510475121.

It is not a de Polignac number, because 121574015406255 - 2⁵ = 121574015406223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18364590 + ... + 24091620.

It is an arithmetic number, because the mean of its divisors is an integer number (12157412253984).

Almost surely, 2^{121574015406255} is an apocalyptic number.

121574015406255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121574015406255 is a deficient number, since it is larger than the sum of its proper divisors (72944580657489).

121574015406255 is a wasteful number, since it uses less digits than its factorization.

121574015406255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142246.

The product of its (nonzero) digits is 1680000, while the sum is 48.

The spelling of 121574015406255 in words is "one hundred twenty-one trillion, five hundred seventy-four billion, fifteen million, four hundred six thousand, two hundred fifty-five".