445660453020 has 48 divisors (see below), whose sum is σ = 1260713710368. Its totient is φ = 117617602560.

The previous prime is 445660452977. The next prime is 445660453103. The reversal of 445660453020 is 20354066544.

It is a super-2 number, since 2×445660453020² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 445660453020.

It is a congruent number.

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, 38281161 + ... + 38292800.

It is an arithmetic number, because the mean of its divisors is an integer number (26264868966).

Almost surely, 2^445660453020 is an apocalyptic number.

It is an amenable number.

445660453020 is an abundant number, since it is smaller than the sum of its proper divisors (815053257348).

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

445660453020 is a wasteful number, since it uses less digits than its factorization.

445660453020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76574070 (or 76574068 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 445660453020 in words is "four hundred forty-five billion, six hundred sixty million, four hundred fifty-three thousand, twenty".