80457889802 has 16 divisors (see below), whose sum is σ = 123462489480. Its totient is φ = 39313838592.

The previous prime is 80457889789. The next prime is 80457889807. The reversal of 80457889802 is 20898875408.

It is a Cunningham number, because it is equal to 283651²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 80457889801 + 1 = 283651^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (80457889807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2511983 + ... + 2543810.

Almost surely, 2^80457889802 is an apocalyptic number.

80457889802 is a deficient number, since it is larger than the sum of its proper divisors (43004599678).

80457889802 is a wasteful number, since it uses less digits than its factorization.

80457889802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055977.

The product of its (nonzero) digits is 10321920, while the sum is 59.

The spelling of 80457889802 in words is "eighty billion, four hundred fifty-seven million, eight hundred eighty-nine thousand, eight hundred two".