80646480040 has 32 divisors (see below), whose sum is σ = 207376663680. Its totient is φ = 27650221632.

The previous prime is 80646480011. The next prime is 80646480041. The reversal of 80646480040 is 4008464608.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 80646479975 and 80646480002.

It is not an unprimeable number, because it can be changed into a prime (80646480041) 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 7 ways as a sum of consecutive naturals, for example, 144011292 + ... + 144011851.

It is an arithmetic number, because the mean of its divisors is an integer number (6480520740).

Almost surely, 2^80646480040 is an apocalyptic number.

It is an amenable number.

80646480040 is an abundant number, since it is smaller than the sum of its proper divisors (126730183640).

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

80646480040 is a wasteful number, since it uses less digits than its factorization.

80646480040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288023161 (or 288023157 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 80646480040 in words is "eighty billion, six hundred forty-six million, four hundred eighty thousand, forty".