80519503991 has 8 divisors (see below), whose sum is σ = 81971318304. Its totient is φ = 79076515840.

The previous prime is 80519503969. The next prime is 80519504017. The reversal of 80519503991 is 19930591508.

It is a happy number.

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 80519503991 - 2⁶ = 80519503927 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 (80519503901) 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, 2188130 + ... + 2224623.

It is an arithmetic number, because the mean of its divisors is an integer number (10246414788).

Almost surely, 2^80519503991 is an apocalyptic number.

80519503991 is a deficient number, since it is larger than the sum of its proper divisors (1451814313).

80519503991 is a wasteful number, since it uses less digits than its factorization.

80519503991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413081.

The product of its (nonzero) digits is 437400, while the sum is 50.

The spelling of 80519503991 in words is "eighty billion, five hundred nineteen million, five hundred three thousand, nine hundred ninety-one".