45745594621 has 4 divisors (see below), whose sum is σ = 45985100544. Its totient is φ = 45506088700.

The previous prime is 45745594567. The next prime is 45745594649. The reversal of 45745594621 is 12649554754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45745594621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45745594681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119752675 + ... + 119753056.

It is an arithmetic number, because the mean of its divisors is an integer number (11496275136).

Almost surely, 2^45745594621 is an apocalyptic number.

It is an amenable number.

45745594621 is a deficient number, since it is larger than the sum of its proper divisors (239505923).

45745594621 is a wasteful number, since it uses less digits than its factorization.

45745594621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239505922.

The product of its digits is 6048000, while the sum is 52.

The spelling of 45745594621 in words is "forty-five billion, seven hundred forty-five million, five hundred ninety-four thousand, six hundred twenty-one".