169012666368 has 784 divisors, whose sum is σ = 625728894336. Its totient is φ = 44431441920.

The previous prime is 169012666363. The next prime is 169012666393. The reversal of 169012666368 is 863666210961.

It is a super-2 number, since 2×169012666368² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169012666363) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 543448933 + ... + 543449243.

Almost surely, 2^169012666368 is an apocalyptic number.

169012666368 is a gapful number since it is divisible by the number (18) 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 169012666368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312864447168).

169012666368 is an abundant number, since it is smaller than the sum of its proper divisors (456716227968).

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

169012666368 is an frugal number, since it uses more digits than its factorization.

169012666368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 169012666368 in words is "one hundred sixty-nine billion, twelve million, six hundred sixty-six thousand, three hundred sixty-eight".