20472761000 has 64 divisors (see below), whose sum is σ = 47948060160. Its totient is φ = 8181960000.

The previous prime is 20472760951. The next prime is 20472761009. The reversal of 20472761000 is 16727402.

It is not an unprimeable number, because it can be changed into a prime (20472761009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1222685 + ... + 1239315.

It is an arithmetic number, because the mean of its divisors is an integer number (749188440).

Almost surely, 2^20472761000 is an apocalyptic number.

20472761000 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 20472761000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23974030080).

20472761000 is an abundant number, since it is smaller than the sum of its proper divisors (27475299160).

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

20472761000 is a wasteful number, since it uses less digits than its factorization.

20472761000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17883 (or 17869 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The spelling of 20472761000 in words is "twenty billion, four hundred seventy-two million, seven hundred sixty-one thousand".