6172130745 has 72 divisors (see below), whose sum is σ = 12195176448. Its totient is φ = 2992476960.

The previous prime is 6172130737. The next prime is 6172130747. The reversal of 6172130745 is 5470312716.

It is a happy number.

6172130745 is a `hidden beast` number, since 617 + 2 + 1 + 30 + 7 + 4 + 5 = 666.

It is not a de Polignac number, because 6172130745 - 2³ = 6172130737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6172130747) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 126024 + ... + 168006.

Almost surely, 2^6172130745 is an apocalyptic number.

It is an amenable number.

6172130745 is a deficient number, since it is larger than the sum of its proper divisors (6023045703).

6172130745 is a wasteful number, since it uses less digits than its factorization.

6172130745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42025 (or 42002 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 6172130745 is about 78562.9094738732. The cubic root of 6172130745 is about 1834.3338161415. Note that the first 3 decimals are identical.

The spelling of 6172130745 in words is "six billion, one hundred seventy-two million, one hundred thirty thousand, seven hundred forty-five".