169868525259413 has 4 divisors (see below), whose sum is σ = 169877562280140. Its totient is φ = 169859488238688.

The previous prime is 169868525259401. The next prime is 169868525259421. The reversal of 169868525259413 is 314952525868961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 155635056242884 + 14233469016529 = 12475378^2 + 3772727^2 .

It is a cyclic number.

It is not a de Polignac number, because 169868525259413 - 2¹⁴ = 169868525243029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169868525259463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4518482168 + ... + 4518519761.

It is an arithmetic number, because the mean of its divisors is an integer number (42469390570035).

Almost surely, 2^{169868525259413} is an apocalyptic number.

It is an amenable number.

169868525259413 is a deficient number, since it is larger than the sum of its proper divisors (9037020727).

169868525259413 is an equidigital number, since it uses as much as digits as its factorization.

169868525259413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9037020726.

The product of its digits is 1119744000, while the sum is 74.

The spelling of 169868525259413 in words is "one hundred sixty-nine trillion, eight hundred sixty-eight billion, five hundred twenty-five million, two hundred fifty-nine thousand, four hundred thirteen".