68969537439 has 16 divisors (see below), whose sum is σ = 100499460480. Its totient is φ = 41724664160.

The previous prime is 68969537389. The next prime is 68969537453. The reversal of 68969537439 is 93473596986.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68969537439 - 2¹¹ = 68969535391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68969537339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1857729 + ... + 1894490.

It is an arithmetic number, because the mean of its divisors is an integer number (6281216280).

Almost surely, 2^68969537439 is an apocalyptic number.

68969537439 is a deficient number, since it is larger than the sum of its proper divisors (31529923041).

68969537439 is a wasteful number, since it uses less digits than its factorization.

68969537439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752790.

The product of its digits is 264539520, while the sum is 69.

The spelling of 68969537439 in words is "sixty-eight billion, nine hundred sixty-nine million, five hundred thirty-seven thousand, four hundred thirty-nine".