71325857251 has 8 divisors (see below), whose sum is σ = 80493130800. Its totient is φ = 62605767840.

The previous prime is 71325857209. The next prime is 71325857311. The reversal of 71325857251 is 15275852317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71325857251 - 2⁹ = 71325856739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71325857651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111795696 + ... + 111796333.

It is an arithmetic number, because the mean of its divisors is an integer number (10061641350).

Almost surely, 2^71325857251 is an apocalyptic number.

71325857251 is a deficient number, since it is larger than the sum of its proper divisors (9167273549).

71325857251 is a wasteful number, since it uses less digits than its factorization.

71325857251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223592069.

The product of its digits is 588000, while the sum is 46.

The spelling of 71325857251 in words is "seventy-one billion, three hundred twenty-five million, eight hundred fifty-seven thousand, two hundred fifty-one".