71894952887 has 2 divisors, whose sum is σ = 71894952888. Its totient is φ = 71894952886.

The previous prime is 71894952881. The next prime is 71894952931. The reversal of 71894952887 is 78825949817.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71894952887 - 2⁶ = 71894952823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71894952881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35947476443 + 35947476444.

It is an arithmetic number, because the mean of its divisors is an integer number (35947476444).

Almost surely, 2^71894952887 is an apocalyptic number.

71894952887 is a deficient number, since it is larger than the sum of its proper divisors (1).

71894952887 is an equidigital number, since it uses as much as digits as its factorization.

71894952887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120, while the sum is 68.

The spelling of 71894952887 in words is "seventy-one billion, eight hundred ninety-four million, nine hundred fifty-two thousand, eight hundred eighty-seven".