71884997851 has 2 divisors, whose sum is σ = 71884997852. Its totient is φ = 71884997850.

The previous prime is 71884997843. The next prime is 71884997857. The reversal of 71884997851 is 15879948817.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71884997851 - 2³ = 71884997843 is a prime.

It is not a weakly prime, because it can be changed into another prime (71884997857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35942498925 + 35942498926.

It is an arithmetic number, because the mean of its divisors is an integer number (35942498926).

Almost surely, 2^71884997851 is an apocalyptic number.

71884997851 is a deficient number, since it is larger than the sum of its proper divisors (1).

71884997851 is an equidigital number, since it uses as much as digits as its factorization.

71884997851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 67.

The spelling of 71884997851 in words is "seventy-one billion, eight hundred eighty-four million, nine hundred ninety-seven thousand, eight hundred fifty-one".