801182320857 has 16 divisors (see below), whose sum is σ = 1186964112000. Its totient is φ = 534109244112.

The previous prime is 801182320853. The next prime is 801182320909. The reversal of 801182320857 is 758023281108.

It is not a de Polignac number, because 801182320857 - 2² = 801182320853 is a prime.

It is a super-2 number, since 2×801182320857² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (801182320853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 939444 + ... + 1576362.

It is an arithmetic number, because the mean of its divisors is an integer number (74185257000).

Almost surely, 2^801182320857 is an apocalyptic number.

It is an amenable number.

801182320857 is a deficient number, since it is larger than the sum of its proper divisors (385781791143).

801182320857 is a wasteful number, since it uses less digits than its factorization.

801182320857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683517 (or 683511 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 801182320857 in words is "eight hundred one billion, one hundred eighty-two million, three hundred twenty thousand, eight hundred fifty-seven".