68247686501 has 2 divisors, whose sum is σ = 68247686502. Its totient is φ = 68247686500.

The previous prime is 68247686497. The next prime is 68247686527. The reversal of 68247686501 is 10568674286.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60972449476 + 7275237025 = 246926^2 + 85295^2 .

It is a cyclic number.

It is not a de Polignac number, because 68247686501 - 2² = 68247686497 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68247616501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34123843250 + 34123843251.

It is an arithmetic number, because the mean of its divisors is an integer number (34123843251).

Almost surely, 2^68247686501 is an apocalyptic number.

It is an amenable number.

68247686501 is a deficient number, since it is larger than the sum of its proper divisors (1).

68247686501 is an equidigital number, since it uses as much as digits as its factorization.

68247686501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 68247686501 in words is "sixty-eight billion, two hundred forty-seven million, six hundred eighty-six thousand, five hundred one".