379866121231 has 4 divisors (see below), whose sum is σ = 399859075000. Its totient is φ = 359873167464.

The previous prime is 379866121177. The next prime is 379866121247. The reversal of 379866121231 is 132121668973.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 379866121231 - 2⁹ = 379866120719 is a prime.

It is a super-2 number, since 2×379866121231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379866121631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9996476856 + ... + 9996476893.

It is an arithmetic number, because the mean of its divisors is an integer number (99964768750).

Almost surely, 2^379866121231 is an apocalyptic number.

379866121231 is a deficient number, since it is larger than the sum of its proper divisors (19992953769).

379866121231 is a wasteful number, since it uses less digits than its factorization.

379866121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19992953768.

The product of its digits is 653184, while the sum is 49.

The spelling of 379866121231 in words is "three hundred seventy-nine billion, eight hundred sixty-six million, one hundred twenty-one thousand, two hundred thirty-one".