881577139951 has 4 divisors (see below), whose sum is σ = 883940617912. Its totient is φ = 879213661992.

The previous prime is 881577139943. The next prime is 881577139969. The reversal of 881577139951 is 159931775188.

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 881577139951 - 2³ = 881577139943 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 (881577139151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181738421 + ... + 1181739166.

It is an arithmetic number, because the mean of its divisors is an integer number (220985154478).

Almost surely, 2^881577139951 is an apocalyptic number.

881577139951 is a deficient number, since it is larger than the sum of its proper divisors (2363477961).

881577139951 is a wasteful number, since it uses less digits than its factorization.

881577139951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363477960.

The product of its digits is 19051200, while the sum is 64.

The spelling of 881577139951 in words is "eight hundred eighty-one billion, five hundred seventy-seven million, one hundred thirty-nine thousand, nine hundred fifty-one".