80475618780 has 36 divisors (see below), whose sum is σ = 244109377512. Its totient is φ = 21460164960.

The previous prime is 80475618767. The next prime is 80475618787. The reversal of 80475618780 is 8781657408.

It is a happy number.

80475618780 is a `hidden beast` number, since 8 + 0 + 4 + 7 + 561 + 8 + 78 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80475618787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223543206 + ... + 223543565.

It is an arithmetic number, because the mean of its divisors is an integer number (6780816042).

Almost surely, 2^80475618780 is an apocalyptic number.

It is an amenable number.

80475618780 is an abundant number, since it is smaller than the sum of its proper divisors (163633758732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80475618780 is a wasteful number, since it uses less digits than its factorization.

80475618780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447086786 (or 447086781 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 80475618780 in words is "eighty billion, four hundred seventy-five million, six hundred eighteen thousand, seven hundred eighty".