45123521775 has 12 divisors (see below), whose sum is σ = 74604222792. Its totient is φ = 24065878240.

The previous prime is 45123521711. The next prime is 45123521777. The reversal of 45123521775 is 57712532154.

It is a happy number.

It is not a de Polignac number, because 45123521775 - 2⁶ = 45123521711 is a prime.

It is a super-2 number, since 2×45123521775² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45123521777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 300823404 + ... + 300823553.

It is an arithmetic number, because the mean of its divisors is an integer number (6217018566).

Almost surely, 2^45123521775 is an apocalyptic number.

45123521775 is a deficient number, since it is larger than the sum of its proper divisors (29480701017).

45123521775 is a wasteful number, since it uses less digits than its factorization.

45123521775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601646970 (or 601646965 counting only the distinct ones).

The product of its digits is 294000, while the sum is 42.

The spelling of 45123521775 in words is "forty-five billion, one hundred twenty-three million, five hundred twenty-one thousand, seven hundred seventy-five".