68969523769 has 2 divisors, whose sum is σ = 68969523770. Its totient is φ = 68969523768.

The previous prime is 68969523739. The next prime is 68969523811. The reversal of 68969523769 is 96732596986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64904186169 + 4065337600 = 254763^2 + 63760^2 .

It is a cyclic number.

It is not a de Polignac number, because 68969523769 - 2²⁵ = 68935969337 is a prime.

It is a super-2 number, since 2×68969523769² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68969523698 and 68969523707.

It is not a weakly prime, because it can be changed into another prime (68969523709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34484761884 + 34484761885.

It is an arithmetic number, because the mean of its divisors is an integer number (34484761885).

Almost surely, 2^68969523769 is an apocalyptic number.

It is an amenable number.

68969523769 is a deficient number, since it is larger than the sum of its proper divisors (1).

68969523769 is an equidigital number, since it uses as much as digits as its factorization.

68969523769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264539520, while the sum is 70.

The spelling of 68969523769 in words is "sixty-eight billion, nine hundred sixty-nine million, five hundred twenty-three thousand, seven hundred sixty-nine".