80870439621 has 16 divisors (see below), whose sum is σ = 111650693760. Its totient is φ = 52005414720.

The previous prime is 80870439619. The next prime is 80870439623. The reversal of 80870439621 is 12693407808.

It is an interprime number because it is at equal distance from previous prime (80870439619) and next prime (80870439623).

It is not a de Polignac number, because 80870439621 - 2¹ = 80870439619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80870439623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345745 + ... + 530358.

It is an arithmetic number, because the mean of its divisors is an integer number (6978168360).

Almost surely, 2^80870439621 is an apocalyptic number.

It is an amenable number.

80870439621 is a deficient number, since it is larger than the sum of its proper divisors (30780254139).

80870439621 is a wasteful number, since it uses less digits than its factorization.

80870439621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877196.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 80870439621 in words is "eighty billion, eight hundred seventy million, four hundred thirty-nine thousand, six hundred twenty-one".