68647520233 has 2 divisors, whose sum is σ = 68647520234. Its totient is φ = 68647520232.

The previous prime is 68647520219. The next prime is 68647520261. The reversal of 68647520233 is 33202574686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67760254864 + 887265369 = 260308^2 + 29787^2 .

It is a cyclic number.

It is not a de Polignac number, because 68647520233 - 2¹³ = 68647512041 is a prime.

It is not a weakly prime, because it can be changed into another prime (68647820233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34323760116 + 34323760117.

It is an arithmetic number, because the mean of its divisors is an integer number (34323760117).

Almost surely, 2^68647520233 is an apocalyptic number.

It is an amenable number.

68647520233 is a deficient number, since it is larger than the sum of its proper divisors (1).

68647520233 is an equidigital number, since it uses as much as digits as its factorization.

68647520233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 68647520233 in words is "sixty-eight billion, six hundred forty-seven million, five hundred twenty thousand, two hundred thirty-three".