71712201551 has 2 divisors, whose sum is σ = 71712201552. Its totient is φ = 71712201550.

The previous prime is 71712201511. The next prime is 71712201553. The reversal of 71712201551 is 15510221717.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71712201551 is a prime.

Together with 71712201553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71712201553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35856100775 + 35856100776.

It is an arithmetic number, because the mean of its divisors is an integer number (35856100776).

Almost surely, 2^71712201551 is an apocalyptic number.

71712201551 is a deficient number, since it is larger than the sum of its proper divisors (1).

71712201551 is an equidigital number, since it uses as much as digits as its factorization.

71712201551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 32.

The spelling of 71712201551 in words is "seventy-one billion, seven hundred twelve million, two hundred one thousand, five hundred fifty-one".