20473941264 has 240 divisors, whose sum is σ = 64975841280. Its totient is φ = 5523759360.

The previous prime is 20473941263. The next prime is 20473941307. The reversal of 20473941264 is 46214937402.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (20473941263) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19259997 + ... + 19261059.

It is an arithmetic number, because the mean of its divisors is an integer number (270732672).

Almost surely, 2^20473941264 is an apocalyptic number.

20473941264 is a gapful number since it is divisible by the number (24) 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 20473941264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32487920640).

20473941264 is an abundant number, since it is smaller than the sum of its proper divisors (44501900016).

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

20473941264 is a wasteful number, since it uses less digits than its factorization.

20473941264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 20473941264 in words is "twenty billion, four hundred seventy-three million, nine hundred forty-one thousand, two hundred sixty-four".