44409785868 has 96 divisors (see below), whose sum is σ = 132941312000. Its totient is φ = 12557680128.

The previous prime is 44409785851. The next prime is 44409785879. The reversal of 44409785868 is 86858790444.

44409785868 is a `hidden beast` number, since 4 + 4 + 40 + 9 + 7 + 8 + 586 + 8 = 666.

It is a super-2 number, since 2×44409785868² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229468 + ... + 376131.

Almost surely, 2^44409785868 is an apocalyptic number.

It is an amenable number.

44409785868 is an abundant number, since it is smaller than the sum of its proper divisors (88531526132).

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

44409785868 is a wasteful number, since it uses less digits than its factorization.

44409785868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605716 (or 605708 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 63.

The spelling of 44409785868 in words is "forty-four billion, four hundred nine million, seven hundred eighty-five thousand, eight hundred sixty-eight".