169076981940 has 144 divisors (see below), whose sum is σ = 503327708352. Its totient is φ = 42399064064.

The previous prime is 169076981929. The next prime is 169076981947. The reversal of 169076981940 is 49189670961.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169076981947) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 24740764 + ... + 24747596.

It is an arithmetic number, because the mean of its divisors is an integer number (3495331308).

Almost surely, 2^169076981940 is an apocalyptic number.

169076981940 is a gapful number since it is divisible by the number (10) 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 169076981940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251663854176).

169076981940 is an abundant number, since it is smaller than the sum of its proper divisors (334250726412).

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

169076981940 is a wasteful number, since it uses less digits than its factorization.

169076981940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8306 (or 8287 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 60.

The spelling of 169076981940 in words is "one hundred sixty-nine billion, seventy-six million, nine hundred eighty-one thousand, nine hundred forty".