445130638581 has 16 divisors (see below), whose sum is σ = 595367115840. Its totient is φ = 295825411200.

The previous prime is 445130638571. The next prime is 445130638591. The reversal of 445130638581 is 185836031544.

It is an interprime number because it is at equal distance from previous prime (445130638571) and next prime (445130638591).

It is not a de Polignac number, because 445130638581 - 2³⁰ = 444056896757 is a prime.

It is a super-2 number, since 2×445130638581² (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 445130638581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445130638571) 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, 1050715 + ... + 1412183.

It is an arithmetic number, because the mean of its divisors is an integer number (37210444740).

Almost surely, 2^445130638581 is an apocalyptic number.

It is an amenable number.

445130638581 is a deficient number, since it is larger than the sum of its proper divisors (150236477259).

445130638581 is a wasteful number, since it uses less digits than its factorization.

445130638581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362756.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 445130638581 in words is "four hundred forty-five billion, one hundred thirty million, six hundred thirty-eight thousand, five hundred eighty-one".