80804880040 has 32 divisors (see below), whose sum is σ = 181854211680. Its totient is φ = 32314266432.

The previous prime is 80804880031. The next prime is 80804880047. The reversal of 80804880040 is 4008840808.

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 = 80804879975 and 80804880002.

It is not an unprimeable number, because it can be changed into a prime (80804880047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68334 + ... + 407773.

It is an arithmetic number, because the mean of its divisors is an integer number (5682944115).

Almost surely, 2^80804880040 is an apocalyptic number.

It is an amenable number.

80804880040 is an abundant number, since it is smaller than the sum of its proper divisors (101049331640).

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

80804880040 is a wasteful number, since it uses less digits than its factorization.

80804880040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480361 (or 480357 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 40.

The spelling of 80804880040 in words is "eighty billion, eight hundred four million, eight hundred eighty thousand, forty".