445745507655 has 32 divisors (see below), whose sum is σ = 831711744000. Its totient is φ = 203769372576.

The previous prime is 445745507639. The next prime is 445745507659. The reversal of 445745507655 is 556705547544.

It is not a de Polignac number, because 445745507655 - 2⁴ = 445745507639 is a prime.

It is a super-2 number, since 2×445745507655² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445745507595 and 445745507604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445745507659) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43313175 + ... + 43323464.

It is an arithmetic number, because the mean of its divisors is an integer number (25990992000).

Almost surely, 2^445745507655 is an apocalyptic number.

445745507655 is a deficient number, since it is larger than the sum of its proper divisors (385966236345).

445745507655 is an equidigital number, since it uses as much as digits as its factorization.

445745507655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86636668 (or 86636654 counting only the distinct ones).

The product of its (nonzero) digits is 58800000, while the sum is 57.

The spelling of 445745507655 in words is "four hundred forty-five billion, seven hundred forty-five million, five hundred seven thousand, six hundred fifty-five".