20477383168 has 80 divisors (see below), whose sum is σ = 45077472000. Its totient is φ = 9215488000.

The previous prime is 20477383127. The next prime is 20477383181. The reversal of 20477383168 is 86138377402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550833 + ... + 586831.

It is an arithmetic number, because the mean of its divisors is an integer number (563468400).

Almost surely, 2^20477383168 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 20477383168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22538736000).

20477383168 is an abundant number, since it is smaller than the sum of its proper divisors (24600088832).

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

20477383168 is a wasteful number, since it uses less digits than its factorization.

20477383168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36129 (or 36113 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 20477383168 in words is "twenty billion, four hundred seventy-seven million, three hundred eighty-three thousand, one hundred sixty-eight".