445281020772 has 48 divisors (see below), whose sum is σ = 1194049704960. Its totient is φ = 126512400672.

The previous prime is 445281020761. The next prime is 445281020813. The reversal of 445281020772 is 277020182544.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14792128 + ... + 14822199.

It is an arithmetic number, because the mean of its divisors is an integer number (24876035520).

Almost surely, 2^445281020772 is an apocalyptic number.

445281020772 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

445281020772 is an abundant number, since it is smaller than the sum of its proper divisors (748768684188).

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

445281020772 is a wasteful number, since it uses less digits than its factorization.

445281020772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29614520 (or 29614518 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 42.

The spelling of 445281020772 in words is "four hundred forty-five billion, two hundred eighty-one million, twenty thousand, seven hundred seventy-two".