169979573412 has 240 divisors, whose sum is σ = 514216600128. Its totient is φ = 48389806080.

The previous prime is 169979573399. The next prime is 169979573437. The reversal of 169979573412 is 214375979961.

169979573412 is a `hidden beast` number, since 1 + 69 + 9 + 7 + 95 + 73 + 412 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 169979573412.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 37380523 + ... + 37385069.

Almost surely, 2^169979573412 is an apocalyptic number.

169979573412 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 169979573412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257108300064).

169979573412 is an abundant number, since it is smaller than the sum of its proper divisors (344237026716).

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

169979573412 is a wasteful number, since it uses less digits than its factorization.

169979573412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208 (or 5197 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 63.

The spelling of 169979573412 in words is "one hundred sixty-nine billion, nine hundred seventy-nine million, five hundred seventy-three thousand, four hundred twelve".