80623537489 has 4 divisors (see below), whose sum is σ = 87952950000. Its totient is φ = 73294124980.

The previous prime is 80623537487. The next prime is 80623537517. The reversal of 80623537489 is 98473532608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80623537489 - 2¹ = 80623537487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80623537487) 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, 3664706239 + ... + 3664706260.

It is an arithmetic number, because the mean of its divisors is an integer number (21988237500).

Almost surely, 2^80623537489 is an apocalyptic number.

It is an amenable number.

80623537489 is a deficient number, since it is larger than the sum of its proper divisors (7329412511).

80623537489 is a wasteful number, since it uses less digits than its factorization.

80623537489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329412510.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 80623537489 in words is "eighty billion, six hundred twenty-three million, five hundred thirty-seven thousand, four hundred eighty-nine".