801521016 has 16 divisors (see below), whose sum is σ = 2003802600. Its totient is φ = 267173664.

The previous prime is 801520999. The next prime is 801521081. The reversal of 801521016 is 610125108.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 33396709 = 801521016 / (8 + 0 + 1 + 5 + 2 + 1 + 0 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16698331 + ... + 16698378.

Almost surely, 2^801521016 is an apocalyptic number.

It is an amenable number.

801521016 is an abundant number, since it is smaller than the sum of its proper divisors (1202281584).

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

801521016 is a wasteful number, since it uses less digits than its factorization.

801521016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33396718 (or 33396714 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 801521016 is about 28311.1464974487. The cubic root of 801521016 is about 928.9057218328.

The spelling of 801521016 in words is "eight hundred one million, five hundred twenty-one thousand, sixteen".