269497121664 has 128 divisors (see below), whose sum is σ = 731480025600. Its totient is φ = 87873265664.

The previous prime is 269497121653. The next prime is 269497121687. The reversal of 269497121664 is 466121794962.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50874664 + ... + 50879960.

It is an arithmetic number, because the mean of its divisors is an integer number (5714687700).

Almost surely, 2^269497121664 is an apocalyptic number.

269497121664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 269497121664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365740012800).

269497121664 is an abundant number, since it is smaller than the sum of its proper divisors (461982903936).

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

269497121664 is a wasteful number, since it uses less digits than its factorization.

269497121664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180 (or 8168 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 57.

The spelling of 269497121664 in words is "two hundred sixty-nine billion, four hundred ninety-seven million, one hundred twenty-one thousand, six hundred sixty-four".