71254011251 has 8 divisors (see below), whose sum is σ = 71953400064. Its totient is φ = 70554768840.

The previous prime is 71254011197. The next prime is 71254011263. The reversal of 71254011251 is 15211045217.

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

It is a cyclic number.

It is not a de Polignac number, because 71254011251 - 2⁶ = 71254011187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71254011281) 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, 1119650 + ... + 1181576.

It is an arithmetic number, because the mean of its divisors is an integer number (8994175008).

Almost surely, 2^71254011251 is an apocalyptic number.

71254011251 is a deficient number, since it is larger than the sum of its proper divisors (699388813).

71254011251 is a wasteful number, since it uses less digits than its factorization.

71254011251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73201.

The product of its (nonzero) digits is 2800, while the sum is 29.

Adding to 71254011251 its reverse (15211045217), we get a palindrome (86465056468).

The spelling of 71254011251 in words is "seventy-one billion, two hundred fifty-four million, eleven thousand, two hundred fifty-one".