68285947087 has 2 divisors, whose sum is σ = 68285947088. Its totient is φ = 68285947086.

The previous prime is 68285947033. The next prime is 68285947181. The reversal of 68285947087 is 78074958286.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68285947087 - 2³¹ = 66138463439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68285947687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34142973543 + 34142973544.

It is an arithmetic number, because the mean of its divisors is an integer number (34142973544).

Almost surely, 2^68285947087 is an apocalyptic number.

68285947087 is a deficient number, since it is larger than the sum of its proper divisors (1).

68285947087 is an equidigital number, since it uses as much as digits as its factorization.

68285947087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54190080, while the sum is 64.

The spelling of 68285947087 in words is "sixty-eight billion, two hundred eighty-five million, nine hundred forty-seven thousand, eighty-seven".