169231687352464 has 135 divisors (see below), whose sum is σ = 362711591653579. Its totient is φ = 76434099132160.

The previous prime is 169231687352407. The next prime is 169231687352471. The reversal of 169231687352464 is 464253786132961.

The square root of 169231687352464 is 13008908.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3445255699600 + 165786431652864 = 1856140^2 + 12875808^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 169231687352464.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 99023806842 + ... + 99023808550.

Almost surely, 2^{169231687352464} is an apocalyptic number.

169231687352464 is the 13008908-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169231687352464

169231687352464 is an abundant number, since it is smaller than the sum of its proper divisors (193479904301115).

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

169231687352464 is an frugal number, since it uses more digits than its factorization.

169231687352464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3794 (or 1895 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 67.

The spelling of 169231687352464 in words is "one hundred sixty-nine trillion, two hundred thirty-one billion, six hundred eighty-seven million, three hundred fifty-two thousand, four hundred sixty-four".