440796367891881 has 80 divisors (see below), whose sum is σ = 683896006552000. Its totient is φ = 282724429059072.

The previous prime is 440796367891871. The next prime is 440796367891907. The reversal of 440796367891881 is 188198763697044.

440796367891881 is a `hidden beast` number, since 4 + 4 + 0 + 7 + 96 + 367 + 8 + 91 + 8 + 81 = 666.

It is not a de Polignac number, because 440796367891881 - 2³¹ = 440794220408233 is a prime.

It is a super-2 number, since 2×440796367891881² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440796367891881.

It is not an unprimeable number, because it can be changed into a prime (440796367891871) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3371767725 + ... + 3371898453.

It is an arithmetic number, because the mean of its divisors is an integer number (8548700081900).

Almost surely, 2^{440796367891881} is an apocalyptic number.

It is an amenable number.

440796367891881 is a deficient number, since it is larger than the sum of its proper divisors (243099638660119).

440796367891881 is a wasteful number, since it uses less digits than its factorization.

440796367891881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145300 (or 145291 counting only the distinct ones).

The product of its (nonzero) digits is 3511517184, while the sum is 81.

The spelling of 440796367891881 in words is "four hundred forty trillion, seven hundred ninety-six billion, three hundred sixty-seven million, eight hundred ninety-one thousand, eight hundred eighty-one".