45051231505221 has 8 divisors (see below), whose sum is σ = 66742565192960. Its totient is φ = 30034154336796.

The previous prime is 45051231505213. The next prime is 45051231505229. The reversal of 45051231505221 is 12250513215054.

45051231505221 is a `hidden beast` number, since 4 + 5 + 0 + 5 + 123 + 1 + 5 + 0 + 522 + 1 = 666.

45051231505221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (45051231505213) and next prime (45051231505229).

It is not a de Polignac number, because 45051231505221 - 2³ = 45051231505213 is a prime.

It is a super-2 number, since 2×45051231505221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45051231505229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834282064885 + ... + 834282064938.

It is an arithmetic number, because the mean of its divisors is an integer number (8342820649120).

Almost surely, 2^{45051231505221} is an apocalyptic number.

It is an amenable number.

45051231505221 is a deficient number, since it is larger than the sum of its proper divisors (21691333687739).

45051231505221 is a wasteful number, since it uses less digits than its factorization.

45051231505221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668564129832 (or 1668564129826 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 45051231505221 in words is "forty-five trillion, fifty-one billion, two hundred thirty-one million, five hundred five thousand, two hundred twenty-one".