68022022085 has 4 divisors (see below), whose sum is σ = 81626426508. Its totient is φ = 54417617664.

The previous prime is 68022022051. The next prime is 68022022091. The reversal of 68022022085 is 58022022086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35748977476 + 32273044609 = 189074^2 + 179647^2 .

It is a cyclic number.

It is not a de Polignac number, because 68022022085 - 2²⁰ = 68020973509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6802202204 + ... + 6802202213.

It is an arithmetic number, because the mean of its divisors is an integer number (20406606627).

Almost surely, 2^68022022085 is an apocalyptic number.

It is an amenable number.

68022022085 is a deficient number, since it is larger than the sum of its proper divisors (13604404423).

68022022085 is a wasteful number, since it uses less digits than its factorization.

68022022085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13604404422.

The product of its (nonzero) digits is 30720, while the sum is 35.

Subtracting from 68022022085 its reverse (58022022086), we obtain a palindrome (9999999999).

The spelling of 68022022085 in words is "sixty-eight billion, twenty-two million, twenty-two thousand, eighty-five".