445680318638380 has 48 divisors (see below), whose sum is σ = 1069721160895296. Its totient is φ = 152792052652800.

The previous prime is 445680318638377. The next prime is 445680318638389. The reversal of 445680318638380 is 83836813086544.

It is not an unprimeable number, because it can be changed into a prime (445680318638389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129841719 + ... + 133229998.

It is an arithmetic number, because the mean of its divisors is an integer number (22285857518652).

Almost surely, 2^{445680318638380} is an apocalyptic number.

It is an amenable number.

445680318638380 is an abundant number, since it is smaller than the sum of its proper divisors (624040842256916).

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

445680318638380 is a wasteful number, since it uses less digits than its factorization.

445680318638380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263083834 (or 263083832 counting only the distinct ones).

The product of its (nonzero) digits is 318504960, while the sum is 67.

The spelling of 445680318638380 in words is "four hundred forty-five trillion, six hundred eighty billion, three hundred eighteen million, six hundred thirty-eight thousand, three hundred eighty".