801157543044 has 24 divisors (see below), whose sum is σ = 1967755369440. Its totient is φ = 252997118784.

The previous prime is 801157543033. The next prime is 801157543057. The reversal of 801157543044 is 440345751108.

It is a junction number, because it is equal to n+sod(n) for n = 801157542987 and 801157543005.

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 7 ways as a sum of consecutive naturals, for example, 1756924209 + ... + 1756924664.

It is an arithmetic number, because the mean of its divisors is an integer number (81989807060).

Almost surely, 2^801157543044 is an apocalyptic number.

It is an amenable number.

801157543044 is an abundant number, since it is smaller than the sum of its proper divisors (1166597826396).

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

801157543044 is a wasteful number, since it uses less digits than its factorization.

801157543044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513848899 (or 3513848897 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 801157543044 in words is "eight hundred one billion, one hundred fifty-seven million, five hundred forty-three thousand, forty-four".