45221745643 has 4 divisors (see below), whose sum is σ = 45223118640. Its totient is φ = 45220372648.

The previous prime is 45221745637. The next prime is 45221745649. The reversal of 45221745643 is 34654712254.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (45221745637) and next prime (45221745649).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45221745643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45221745643.

It is not an unprimeable number, because it can be changed into a prime (45221745649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635848 + ... + 703381.

It is an arithmetic number, because the mean of its divisors is an integer number (11305779660).

Almost surely, 2^45221745643 is an apocalyptic number.

45221745643 is a deficient number, since it is larger than the sum of its proper divisors (1372997).

45221745643 is a wasteful number, since it uses less digits than its factorization.

45221745643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372996.

The product of its digits is 806400, while the sum is 43.

The spelling of 45221745643 in words is "forty-five billion, two hundred twenty-one million, seven hundred forty-five thousand, six hundred forty-three".