68921769835 has 16 divisors (see below), whose sum is σ = 88374607200. Its totient is φ = 51417939456.

The previous prime is 68921769823. The next prime is 68921769841. The reversal of 68921769835 is 53896712986.

It is a cyclic number.

It is not a de Polignac number, because 68921769835 - 2²¹ = 68919672683 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3710205 + ... + 3728734.

It is an arithmetic number, because the mean of its divisors is an integer number (5523412950).

Almost surely, 2^68921769835 is an apocalyptic number.

68921769835 is a deficient number, since it is larger than the sum of its proper divisors (19452837365).

68921769835 is a wasteful number, since it uses less digits than its factorization.

68921769835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7439070.

The product of its digits is 39191040, while the sum is 64.

The spelling of 68921769835 in words is "sixty-eight billion, nine hundred twenty-one million, seven hundred sixty-nine thousand, eight hundred thirty-five".