169061681412 has 336 divisors, whose sum is σ = 488268457600. Its totient is φ = 50882287104.

The previous prime is 169061681407. The next prime is 169061681429. The reversal of 169061681412 is 214186160961.

169061681412 is a `hidden beast` number, since 1 + 6 + 9 + 0 + 616 + 8 + 14 + 12 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 550689363 + ... + 550689669.

Almost surely, 2^169061681412 is an apocalyptic number.

169061681412 is a gapful number since it is divisible by the number (12) 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 169061681412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244134228800).

169061681412 is an abundant number, since it is smaller than the sum of its proper divisors (319206776188).

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

169061681412 is a wasteful number, since it uses less digits than its factorization.

169061681412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 169061681412 in words is "one hundred sixty-nine billion, sixty-one million, six hundred eighty-one thousand, four hundred twelve".