80621000475 has 48 divisors (see below), whose sum is σ = 133911354720. Its totient is φ = 42798873600.

The previous prime is 80621000443. The next prime is 80621000501. The reversal of 80621000475 is 57400012608.

80621000475 is a nontrivial binomial coefficient, being equal to C(401550, 2).

It is not a de Polignac number, because 80621000475 - 2⁵ = 80621000443 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 30114837 + ... + 30117513.

It is an arithmetic number, because the mean of its divisors is an integer number (2789819890).

Almost surely, 2^80621000475 is an apocalyptic number.

80621000475 is the 401549-th triangular number and also the 200775-th hexagonal number.

80621000475 is a deficient number, since it is larger than the sum of its proper divisors (53290354245).

80621000475 is a wasteful number, since it uses less digits than its factorization.

80621000475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400 (or 4395 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 80621000475 in words is "eighty billion, six hundred twenty-one million, four hundred seventy-five", and thus it is an aban number.