20163780024 has 32 divisors (see below), whose sum is σ = 52601166720. Its totient is φ = 6429031136.

The previous prime is 20163779983. The next prime is 20163780029. The reversal of 20163780024 is 42008736102.

It is a super-2 number, since 2×20163780024² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20163780029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18263742 + ... + 18264845.

It is an arithmetic number, because the mean of its divisors is an integer number (1643786460).

Almost surely, 2^20163780024 is an apocalyptic number.

20163780024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20163780024 is an abundant number, since it is smaller than the sum of its proper divisors (32437386696).

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

20163780024 is a wasteful number, since it uses less digits than its factorization.

20163780024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36528619 (or 36528615 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 20163780024 in words is "twenty billion, one hundred sixty-three million, seven hundred eighty thousand, twenty-four".