20162178396 has 192 divisors, whose sum is σ = 58118860800. Its totient is φ = 6015632832.

The previous prime is 20162178389. The next prime is 20162178451. The reversal of 20162178396 is 69387126102.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 3914695 + ... + 3919841.

It is an arithmetic number, because the mean of its divisors is an integer number (302702400).

Almost surely, 2^20162178396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20162178396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29059430400).

20162178396 is an abundant number, since it is smaller than the sum of its proper divisors (37956682404).

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

20162178396 is a wasteful number, since it uses less digits than its factorization.

20162178396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285 (or 5277 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 20162178396 in words is "twenty billion, one hundred sixty-two million, one hundred seventy-eight thousand, three hundred ninety-six".