381111936679 has 4 divisors (see below), whose sum is σ = 381135956584. Its totient is φ = 381087916776.

The previous prime is 381111936661. The next prime is 381111936691. The reversal of 381111936679 is 976639111183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976639111183 = 397 ⋅2460048139.

It is a cyclic number.

It is not a de Polignac number, because 381111936679 - 2⁹ = 381111936167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381111936379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11986137 + ... + 12017890.

It is an arithmetic number, because the mean of its divisors is an integer number (95283989146).

Almost surely, 2^381111936679 is an apocalyptic number.

381111936679 is a deficient number, since it is larger than the sum of its proper divisors (24019905).

381111936679 is a wasteful number, since it uses less digits than its factorization.

381111936679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24019904.

The product of its digits is 1469664, while the sum is 55.

The spelling of 381111936679 in words is "three hundred eighty-one billion, one hundred eleven million, nine hundred thirty-six thousand, six hundred seventy-nine".