269768138634 has 128 divisors (see below), whose sum is σ = 634191667200. Its totient is φ = 84765320640.

The previous prime is 269768138623. The next prime is 269768138639. The reversal of 269768138634 is 436831867962.

It is not an unprimeable number, because it can be changed into a prime (269768138639) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 296122639 + ... + 296123549.

It is an arithmetic number, because the mean of its divisors is an integer number (4954622400).

Almost surely, 2^269768138634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 269768138634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317095833600).

269768138634 is an abundant number, since it is smaller than the sum of its proper divisors (364423528566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

269768138634 is a wasteful number, since it uses less digits than its factorization.

269768138634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065 (or 2059 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 63.

The spelling of 269768138634 in words is "two hundred sixty-nine billion, seven hundred sixty-eight million, one hundred thirty-eight thousand, six hundred thirty-four".