80690258819 has 4 divisors (see below), whose sum is σ = 81662430696. Its totient is φ = 79718086944.

The previous prime is 80690258809. The next prime is 80690258837. The reversal of 80690258819 is 91885209608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80690258819 is a prime.

It is a super-2 number, since 2×80690258819² (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 (80690258809) 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, 486085814 + ... + 486085979.

It is an arithmetic number, because the mean of its divisors is an integer number (20415607674).

Almost surely, 2^80690258819 is an apocalyptic number.

80690258819 is a deficient number, since it is larger than the sum of its proper divisors (972171877).

80690258819 is an equidigital number, since it uses as much as digits as its factorization.

80690258819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972171876.

The product of its (nonzero) digits is 2488320, while the sum is 56.

The spelling of 80690258819 in words is "eighty billion, six hundred ninety million, two hundred fifty-eight thousand, eight hundred nineteen".