20162170080 has 240 divisors, whose sum is σ = 76629811104. Its totient is φ = 4962954240.

The previous prime is 20162170057. The next prime is 20162170099. The reversal of 20162170080 is 8007126102.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 108645 + ... + 228315.

Almost surely, 2^20162170080 is an apocalyptic number.

20162170080 is a gapful number since it is divisible by the number (20) 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 20162170080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38314905552).

20162170080 is an abundant number, since it is smaller than the sum of its proper divisors (56467641024).

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

20162170080 is a wasteful number, since it uses less digits than its factorization.

20162170080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119711 (or 119694 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

Adding to 20162170080 its reverse (8007126102), we get a palindrome (28169296182).

The spelling of 20162170080 in words is "twenty billion, one hundred sixty-two million, one hundred seventy thousand, eighty".