445155505992 has 48 divisors (see below), whose sum is σ = 1244520775680. Its totient is φ = 143598549600.

The previous prime is 445155505939. The next prime is 445155505999. The reversal of 445155505992 is 299505551544.

445155505992 is a `hidden beast` number, since 4 + 45 + 1 + 5 + 5 + 5 + 0 + 599 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (445155505999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99718984 + ... + 99723447.

It is an arithmetic number, because the mean of its divisors is an integer number (25927516160).

Almost surely, 2^445155505992 is an apocalyptic number.

It is an amenable number.

445155505992 is an abundant number, since it is smaller than the sum of its proper divisors (799365269688).

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

445155505992 is a wasteful number, since it uses less digits than its factorization.

445155505992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199442474 (or 199442467 counting only the distinct ones).

The product of its (nonzero) digits is 8100000, while the sum is 54.

The spelling of 445155505992 in words is "four hundred forty-five billion, one hundred fifty-five million, five hundred five thousand, nine hundred ninety-two".