80642055931 has 4 divisors (see below), whose sum is σ = 80683434000. Its totient is φ = 80600677864.

The previous prime is 80642055869. The next prime is 80642055943. The reversal of 80642055931 is 13955024608.

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 80642055931 - 2⁷ = 80642055803 is a prime.

It is a super-2 number, since 2×80642055931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80642055331) 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, 20686111 + ... + 20690008.

It is an arithmetic number, because the mean of its divisors is an integer number (20170858500).

Almost surely, 2^80642055931 is an apocalyptic number.

80642055931 is a deficient number, since it is larger than the sum of its proper divisors (41378069).

80642055931 is a wasteful number, since it uses less digits than its factorization.

80642055931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41378068.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 80642055931 in words is "eighty billion, six hundred forty-two million, fifty-five thousand, nine hundred thirty-one".