801672801780 has 24 divisors (see below), whose sum is σ = 2244683845152. Its totient is φ = 213779413792.

The previous prime is 801672801757. The next prime is 801672801827. The reversal of 801672801780 is 87108276108.

It is a super-2 number, since 2×801672801780² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6680606622 + ... + 6680606741.

It is an arithmetic number, because the mean of its divisors is an integer number (93528493548).

Almost surely, 2^801672801780 is an apocalyptic number.

It is an amenable number.

801672801780 is an abundant number, since it is smaller than the sum of its proper divisors (1443011043372).

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

801672801780 is a wasteful number, since it uses less digits than its factorization.

801672801780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13361213375 (or 13361213373 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 48.

The spelling of 801672801780 in words is "eight hundred one billion, six hundred seventy-two million, eight hundred one thousand, seven hundred eighty".