445788993881 has 96 divisors (see below), whose sum is σ = 615353760000. Its totient is φ = 321363356160.

The previous prime is 445788993877. The next prime is 445788993883. The reversal of 445788993881 is 188399887544.

It is not a de Polignac number, because 445788993881 - 2² = 445788993877 is a prime.

It is a super-2 number, since 2×445788993881² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445788993799 and 445788993808.

It is not an unprimeable number, because it can be changed into a prime (445788993883) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 41622155 + ... + 41632863.

It is an arithmetic number, because the mean of its divisors is an integer number (6409935000).

Almost surely, 2^445788993881 is an apocalyptic number.

It is an amenable number.

445788993881 is a deficient number, since it is larger than the sum of its proper divisors (169564766119).

445788993881 is a wasteful number, since it uses less digits than its factorization.

445788993881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10828 (or 10803 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 74.

The spelling of 445788993881 in words is "four hundred forty-five billion, seven hundred eighty-eight million, nine hundred ninety-three thousand, eight hundred eighty-one".