745602212565 has 72 divisors (see below), whose sum is σ = 1503576467640. Its totient is φ = 340801622784.

The previous prime is 745602212527. The next prime is 745602212591. The reversal of 745602212565 is 565212206547.

745602212565 is a `hidden beast` number, since 7 + 4 + 5 + 60 + 2 + 21 + 2 + 565 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 57775813956 + 687826398609 = 240366^2 + 829353^2 .

It is not a de Polignac number, because 745602212565 - 2⁷ = 745602212437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 745602212565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21214387 + ... + 21249503.

It is an arithmetic number, because the mean of its divisors is an integer number (20883006495).

Almost surely, 2^745602212565 is an apocalyptic number.

It is an amenable number.

745602212565 is an abundant number, since it is smaller than the sum of its proper divisors (757974255075).

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

745602212565 is a wasteful number, since it uses less digits than its factorization.

745602212565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44771 (or 44761 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 745602212565 in words is "seven hundred forty-five billion, six hundred two million, two hundred twelve thousand, five hundred sixty-five".