71051620571 has 2 divisors, whose sum is σ = 71051620572. Its totient is φ = 71051620570.

The previous prime is 71051620537. The next prime is 71051620579. The reversal of 71051620571 is 17502615017.

It is a strong prime.

It is an emirp because it is prime and its reverse (17502615017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71051620571 - 2¹⁴ = 71051604187 is a prime.

It is not a weakly prime, because it can be changed into another prime (71051620579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35525810285 + 35525810286.

It is an arithmetic number, because the mean of its divisors is an integer number (35525810286).

Almost surely, 2^71051620571 is an apocalyptic number.

71051620571 is a deficient number, since it is larger than the sum of its proper divisors (1).

71051620571 is an equidigital number, since it uses as much as digits as its factorization.

71051620571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 71051620571 in words is "seventy-one billion, fifty-one million, six hundred twenty thousand, five hundred seventy-one".