121671316275257 has 48 divisors (see below), whose sum is σ = 145910233650048. Its totient is φ = 99378996837120.

The previous prime is 121671316275253. The next prime is 121671316275263. The reversal of 121671316275257 is 752572613176121.

It is not a de Polignac number, because 121671316275257 - 2² = 121671316275253 is a prime.

It is a super-3 number, since 3×121671316275257³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121671316275253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6412857023 + ... + 6412875995.

It is an arithmetic number, because the mean of its divisors is an integer number (3039796534376).

Almost surely, 2^{121671316275257} is an apocalyptic number.

It is an amenable number.

121671316275257 is a deficient number, since it is larger than the sum of its proper divisors (24238917374791).

121671316275257 is a wasteful number, since it uses less digits than its factorization.

121671316275257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25470 (or 25447 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 56.

The spelling of 121671316275257 in words is "one hundred twenty-one trillion, six hundred seventy-one billion, three hundred sixteen million, two hundred seventy-five thousand, two hundred fifty-seven".