45274918217 has 4 divisors (see below), whose sum is σ = 45723184836. Its totient is φ = 44826651600.

The previous prime is 45274918187. The next prime is 45274918231. The reversal of 45274918217 is 71281947254.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43489348681 + 1785569536 = 208541^2 + 42256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45274918217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45274918237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224133158 + ... + 224133359.

It is an arithmetic number, because the mean of its divisors is an integer number (11430796209).

Almost surely, 2^45274918217 is an apocalyptic number.

It is an amenable number.

45274918217 is a deficient number, since it is larger than the sum of its proper divisors (448266619).

45274918217 is a wasteful number, since it uses less digits than its factorization.

45274918217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448266618.

The product of its digits is 1128960, while the sum is 50.

The spelling of 45274918217 in words is "forty-five billion, two hundred seventy-four million, nine hundred eighteen thousand, two hundred seventeen".