169928987136 has 320 divisors, whose sum is σ = 492253065216. Its totient is φ = 51945062400.

The previous prime is 169928987131. The next prime is 169928987147. The reversal of 169928987136 is 631789829961.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (169928987131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92805741 + ... + 92807571.

Almost surely, 2^169928987136 is an apocalyptic number.

169928987136 is a gapful number since it is divisible by the number (16) 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 169928987136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246126532608).

169928987136 is an abundant number, since it is smaller than the sum of its proper divisors (322324078080).

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

169928987136 is a wasteful number, since it uses less digits than its factorization.

169928987136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983 (or 1967 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 69.

The spelling of 169928987136 in words is "one hundred sixty-nine billion, nine hundred twenty-eight million, nine hundred eighty-seven thousand, one hundred thirty-six".