71885190210913 has 2 divisors, whose sum is σ = 71885190210914. Its totient is φ = 71885190210912.

The previous prime is 71885190210907. The next prime is 71885190210919. The reversal of 71885190210913 is 31901209158817.

It is a balanced prime because it is at equal distance from previous prime (71885190210907) and next prime (71885190210919).

It can be written as a sum of positive squares in only one way, i.e., 52110163875169 + 19775026335744 = 7218737^2 + 4446912^2 .

It is an emirp because it is prime and its reverse (31901209158817) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71885190210913 is a prime.

It is not a weakly prime, because it can be changed into another prime (71885190210919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35942595105456 + 35942595105457.

It is an arithmetic number, because the mean of its divisors is an integer number (35942595105457).

Almost surely, 2^{71885190210913} is an apocalyptic number.

It is an amenable number.

71885190210913 is a deficient number, since it is larger than the sum of its proper divisors (1).

71885190210913 is an equidigital number, since it uses as much as digits as its factorization.

71885190210913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 55.

The spelling of 71885190210913 in words is "seventy-one trillion, eight hundred eighty-five billion, one hundred ninety million, two hundred ten thousand, nine hundred thirteen".