71628834251 has 8 divisors (see below), whose sum is σ = 77146329120. Its totient is φ = 66112422912.

The previous prime is 71628834239. The next prime is 71628834253. The reversal of 71628834251 is 15243882617.

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 71628834251 - 2⁶ = 71628834187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71628834196 and 71628834205.

It is not an unprimeable number, because it can be changed into a prime (71628834253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130895 + ... + 400488.

It is an arithmetic number, because the mean of its divisors is an integer number (9643291140).

Almost surely, 2^71628834251 is an apocalyptic number.

71628834251 is a deficient number, since it is larger than the sum of its proper divisors (5517494869).

71628834251 is a wasteful number, since it uses less digits than its factorization.

71628834251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541765.

The product of its digits is 645120, while the sum is 47.

The spelling of 71628834251 in words is "seventy-one billion, six hundred twenty-eight million, eight hundred thirty-four thousand, two hundred fifty-one".