169401261446464 has 56 divisors (see below), whose sum is σ = 336952293409280. Its totient is φ = 84499972913664.

The previous prime is 169401261446407. The next prime is 169401261446489. The reversal of 169401261446464 is 464644162104961.

It is a junction number, because it is equal to n+sod(n) for n = 169401261446399 and 169401261446408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141310777 + ... + 142504519.

Almost surely, 2^{169401261446464} is an apocalyptic number.

It is an amenable number.

169401261446464 is a deficient number, since it is larger than the sum of its proper divisors (167551031962816).

169401261446464 is a wasteful number, since it uses less digits than its factorization.

169401261446464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199007 (or 1198997 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 58.

The spelling of 169401261446464 in words is "one hundred sixty-nine trillion, four hundred one billion, two hundred sixty-one million, four hundred forty-six thousand, four hundred sixty-four".