8120253147 has 4 divisors (see below), whose sum is σ = 10827004200. Its totient is φ = 5413502096.

The previous prime is 8120253143. The next prime is 8120253179. The reversal of 8120253147 is 7413520218.

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

It is a cyclic number.

It is not a de Polignac number, because 8120253147 - 2² = 8120253143 is a prime.

It is a super-2 number, since 2×8120253147² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8120253143) 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, 1353375522 + ... + 1353375527.

It is an arithmetic number, because the mean of its divisors is an integer number (2706751050).

Almost surely, 2^8120253147 is an apocalyptic number.

8120253147 is a deficient number, since it is larger than the sum of its proper divisors (2706751053).

8120253147 is a wasteful number, since it uses less digits than its factorization.

8120253147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706751052.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 8120253147 is about 90112.4472367719. The cubic root of 8120253147 is about 2009.9712995580.

The spelling of 8120253147 in words is "eight billion, one hundred twenty million, two hundred fifty-three thousand, one hundred forty-seven".