32155215305445 has 12 divisors (see below), whose sum is σ = 55735706529516. Its totient is φ = 17149448162880.

The previous prime is 32155215305419. The next prime is 32155215305449. The reversal of 32155215305445 is 54450351255123.

32155215305445 is a `hidden beast` number, since 3 + 2 + 1 + 5 + 5 + 21 + 530 + 54 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13245945692004 + 18909269613441 = 3639498^2 + 4348479^2 .

It is not a de Polignac number, because 32155215305445 - 2²² = 32155211111141 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 714560340121 = 32155215305445 / (3 + 2 + 1 + 5 + 5 + 2 + 1 + 5 + 3 + 0 + 5 + 4 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 32155215305445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32155215305449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357280170016 + ... + 357280170105.

It is an arithmetic number, because the mean of its divisors is an integer number (4644642210793).

Almost surely, 2^{32155215305445} is an apocalyptic number.

It is an amenable number.

32155215305445 is a deficient number, since it is larger than the sum of its proper divisors (23580491224071).

32155215305445 is a wasteful number, since it uses less digits than its factorization.

32155215305445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714560340132 (or 714560340129 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The spelling of 32155215305445 in words is "thirty-two trillion, one hundred fifty-five billion, two hundred fifteen million, three hundred five thousand, four hundred forty-five".