45220423455123 has 16 divisors (see below), whose sum is σ = 68920954404096. Its totient is φ = 25835126047200.

The previous prime is 45220423455049. The next prime is 45220423455143. The reversal of 45220423455123 is 32155432402254.

It is not a de Polignac number, because 45220423455123 - 2²⁴ = 45220406677907 is a prime.

It is a super-2 number, since 2×45220423455123² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45220423455143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213055036 + ... + 213267177.

It is an arithmetic number, because the mean of its divisors is an integer number (4307559650256).

Almost surely, 2^{45220423455123} is an apocalyptic number.

45220423455123 is a deficient number, since it is larger than the sum of its proper divisors (23700530948973).

45220423455123 is a wasteful number, since it uses less digits than its factorization.

45220423455123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426327274.

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 45220423455123 its reverse (32155432402254), we get a palindrome (77375855857377).

The spelling of 45220423455123 in words is "forty-five trillion, two hundred twenty billion, four hundred twenty-three million, four hundred fifty-five thousand, one hundred twenty-three".