68837922693 has 24 divisors (see below), whose sum is σ = 100251611928. Its totient is φ = 45514547712.

The previous prime is 68837922683. The next prime is 68837922709. The reversal of 68837922693 is 39622973886.

It can be written as a sum of positive squares in 4 ways, for example, as 185014404 + 68652908289 = 13602^2 + 262017^2 .

It is not a de Polignac number, because 68837922693 - 2⁴ = 68837922677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68837922693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68837922683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1327155 + ... + 1378047.

It is an arithmetic number, because the mean of its divisors is an integer number (4177150497).

Almost surely, 2^68837922693 is an apocalyptic number.

It is an amenable number.

68837922693 is a deficient number, since it is larger than the sum of its proper divisors (31413689235).

68837922693 is a wasteful number, since it uses less digits than its factorization.

68837922693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52133 (or 52130 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 63.

The spelling of 68837922693 in words is "sixty-eight billion, eight hundred thirty-seven million, nine hundred twenty-two thousand, six hundred ninety-three".