801155120 has 40 divisors (see below), whose sum is σ = 1875214800. Its totient is φ = 318306560.

The previous prime is 801155099. The next prime is 801155149. The reversal of 801155120 is 21551108.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21686 + ... + 45525.

It is an arithmetic number, because the mean of its divisors is an integer number (46880370).

Almost surely, 2^801155120 is an apocalyptic number.

801155120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

801155120 is an abundant number, since it is smaller than the sum of its proper divisors (1074059680).

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

801155120 is a wasteful number, since it uses less digits than its factorization.

801155120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67373 (or 67367 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 801155120 is about 28304.6837113577. The cubic root of 801155120 is about 928.7643511915.

The spelling of 801155120 in words is "eight hundred one million, one hundred fifty-five thousand, one hundred twenty".