45424655221 has 4 divisors (see below), whose sum is σ = 49554169344. Its totient is φ = 41295141100.

The previous prime is 45424655203. The next prime is 45424655281. The reversal of 45424655221 is 12255642454.

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 not a de Polignac number, because 45424655221 - 2¹⁹ = 45424130933 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 (45424655281) 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, 2064757045 + ... + 2064757066.

It is an arithmetic number, because the mean of its divisors is an integer number (12388542336).

Almost surely, 2^45424655221 is an apocalyptic number.

It is an amenable number.

45424655221 is a deficient number, since it is larger than the sum of its proper divisors (4129514123).

45424655221 is a wasteful number, since it uses less digits than its factorization.

45424655221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129514122.

The product of its digits is 384000, while the sum is 40.

The spelling of 45424655221 in words is "forty-five billion, four hundred twenty-four million, six hundred fifty-five thousand, two hundred twenty-one".