45306215523 has 12 divisors (see below), whose sum is σ = 65803873408. Its totient is φ = 30037268880.

The previous prime is 45306215519. The next prime is 45306215561. The reversal of 45306215523 is 32551260354.

45306215523 is a `hidden beast` number, since 4 + 5 + 3 + 0 + 621 + 5 + 5 + 23 = 666.

It is not a de Polignac number, because 45306215523 - 2² = 45306215519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45306215573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13904515 + ... + 13907772.

Almost surely, 2^45306215523 is an apocalyptic number.

45306215523 is a deficient number, since it is larger than the sum of its proper divisors (20497657885).

45306215523 is a wasteful number, since it uses less digits than its factorization.

45306215523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27812474 (or 27812471 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 45306215523 its reverse (32551260354), we get a palindrome (77857475877).

The spelling of 45306215523 in words is "forty-five billion, three hundred six million, two hundred fifteen thousand, five hundred twenty-three".