71886693863401 has 2 divisors, whose sum is σ = 71886693863402. Its totient is φ = 71886693863400.

The previous prime is 71886693863381. The next prime is 71886693863423. The reversal of 71886693863401 is 10436839668817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68512437146176 + 3374256717225 = 8277224^2 + 1836915^2 .

It is a cyclic number.

It is not a de Polignac number, because 71886693863401 - 2¹⁹ = 71886693339113 is a prime.

It is a super-2 number, since 2×71886693863401² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71886693863461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35943346931700 + 35943346931701.

It is an arithmetic number, because the mean of its divisors is an integer number (35943346931701).

Almost surely, 2^{71886693863401} is an apocalyptic number.

It is an amenable number.

71886693863401 is a deficient number, since it is larger than the sum of its proper divisors (1).

71886693863401 is an equidigital number, since it uses as much as digits as its factorization.

71886693863401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250822656, while the sum is 70.

The spelling of 71886693863401 in words is "seventy-one trillion, eight hundred eighty-six billion, six hundred ninety-three million, eight hundred sixty-three thousand, four hundred one".