20165488360 has 24 divisors (see below), whose sum is σ = 45374369670. Its totient is φ = 8065836096.

The previous prime is 20165488319. The next prime is 20165488361. The reversal of 20165488360 is 6388456102.

It can be written as a sum of positive squares in 3 ways, for example, as 7455631716 + 12709856644 = 86346^2 + 112738^2 .

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20165488361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 886894 + ... + 909346.

Almost surely, 2^20165488360 is an apocalyptic number.

20165488360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20165488360 is an abundant number, since it is smaller than the sum of its proper divisors (25208881310).

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

20165488360 is an frugal number, since it uses more digits than its factorization.

20165488360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44917 (or 22460 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 20165488360 in words is "twenty billion, one hundred sixty-five million, four hundred eighty-eight thousand, three hundred sixty".