121871382675 has 72 divisors (see below), whose sum is σ = 241952228352. Its totient is φ = 53915400000.

The previous prime is 121871382547. The next prime is 121871382823. The reversal of 121871382675 is 576283178121.

It is not a de Polignac number, because 121871382675 - 2⁷ = 121871382547 is a prime.

It is a super-3 number, since 3×121871382675³ (a number of 34 digits) contains 333 as substring.

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, 420951 + ... + 648800.

It is an arithmetic number, because the mean of its divisors is an integer number (3360447616).

Almost surely, 2^121871382675 is an apocalyptic number.

121871382675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121871382675 is a deficient number, since it is larger than the sum of its proper divisors (120080845677).

121871382675 is a wasteful number, since it uses less digits than its factorization.

121871382675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069809 (or 1069797 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The spelling of 121871382675 in words is "one hundred twenty-one billion, eight hundred seventy-one million, three hundred eighty-two thousand, six hundred seventy-five".