80858442539 has 32 divisors (see below), whose sum is σ = 94568688000. Its totient is φ = 67712486400.

The previous prime is 80858442499. The next prime is 80858442547. The reversal of 80858442539 is 93524485808.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80858442539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80858412539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16536407 + ... + 16541295.

It is an arithmetic number, because the mean of its divisors is an integer number (2955271500).

Almost surely, 2^80858442539 is an apocalyptic number.

80858442539 is a deficient number, since it is larger than the sum of its proper divisors (13710245461).

80858442539 is a wasteful number, since it uses less digits than its factorization.

80858442539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303.

The product of its (nonzero) digits is 11059200, while the sum is 56.

The spelling of 80858442539 in words is "eighty billion, eight hundred fifty-eight million, four hundred forty-two thousand, five hundred thirty-nine".