80378939081 has 8 divisors (see below), whose sum is σ = 92121878784. Its totient is φ = 68701057920.

The previous prime is 80378939057. The next prime is 80378939087. The reversal of 80378939081 is 18093987308.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80378939081 - 2²⁶ = 80311830217 is a prime.

It is a super-2 number, since 2×80378939081² (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 (80378939087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16261985 + ... + 16266926.

It is an arithmetic number, because the mean of its divisors is an integer number (11515234848).

Almost surely, 2^80378939081 is an apocalyptic number.

It is an amenable number.

80378939081 is a deficient number, since it is larger than the sum of its proper divisors (11742939703).

80378939081 is a wasteful number, since it uses less digits than its factorization.

80378939081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32529271.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 80378939081 in words is "eighty billion, three hundred seventy-eight million, nine hundred thirty-nine thousand, eighty-one".