7144132857 has 4 divisors (see below), whose sum is σ = 9525510480. Its totient is φ = 4762755236.

The previous prime is 7144132777. The next prime is 7144132871. The reversal of 7144132857 is 7582314417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7144132857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7144132157) 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, 1190688807 + ... + 1190688812.

It is an arithmetic number, because the mean of its divisors is an integer number (2381377620).

Almost surely, 2^7144132857 is an apocalyptic number.

It is an amenable number.

7144132857 is a deficient number, since it is larger than the sum of its proper divisors (2381377623).

7144132857 is a wasteful number, since it uses less digits than its factorization.

7144132857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381377622.

The product of its digits is 188160, while the sum is 42.

The square root of 7144132857 is about 84522.9723625477. The cubic root of 7144132857 is about 1925.9714313903.

The spelling of 7144132857 in words is "seven billion, one hundred forty-four million, one hundred thirty-two thousand, eight hundred fifty-seven".