44781816878 has 32 divisors (see below), whose sum is σ = 71833824000. Its totient is φ = 20891324160.

The previous prime is 44781816869. The next prime is 44781816881. The reversal of 44781816878 is 87861818744.

It is a super-2 number, since 2×44781816878² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 44781816878.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1257218 + ... + 1292346.

It is an arithmetic number, because the mean of its divisors is an integer number (2244807000).

Almost surely, 2^44781816878 is an apocalyptic number.

44781816878 is a deficient number, since it is larger than the sum of its proper divisors (27052007122).

44781816878 is a wasteful number, since it uses less digits than its factorization.

44781816878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35900.

The product of its digits is 19267584, while the sum is 62.

The spelling of 44781816878 in words is "forty-four billion, seven hundred eighty-one million, eight hundred sixteen thousand, eight hundred seventy-eight".