20455463112 has 128 divisors (see below), whose sum is σ = 62041386240. Its totient is φ = 5486469120.

The previous prime is 20455463081. The next prime is 20455463117. The reversal of 20455463112 is 21136455402.

It is a super-2 number, since 2×20455463112² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20455463117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1124812 + ... + 1142852.

It is an arithmetic number, because the mean of its divisors is an integer number (484698330).

Almost surely, 2^20455463112 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 20455463112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31020693120).

20455463112 is an abundant number, since it is smaller than the sum of its proper divisors (41585923128).

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

20455463112 is a wasteful number, since it uses less digits than its factorization.

20455463112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18471 (or 18467 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 20455463112 in words is "twenty billion, four hundred fifty-five million, four hundred sixty-three thousand, one hundred twelve".