801145406789 has 24 divisors (see below), whose sum is σ = 1036007981568. Its totient is φ = 613425748320.

The previous prime is 801145406779. The next prime is 801145406801. The reversal of 801145406789 is 987604541108.

It is not a de Polignac number, because 801145406789 - 2⁸ = 801145406533 is a prime.

It is a super-2 number, since 2×801145406789² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 801145406789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801145406779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20265497 + ... + 20304990.

It is an arithmetic number, because the mean of its divisors is an integer number (43166999232).

Almost surely, 2^801145406789 is an apocalyptic number.

It is an amenable number.

801145406789 is a deficient number, since it is larger than the sum of its proper divisors (234862574779).

801145406789 is a wasteful number, since it uses less digits than its factorization.

801145406789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40570545 (or 40570538 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 801145406789 in words is "eight hundred one billion, one hundred forty-five million, four hundred six thousand, seven hundred eighty-nine".