20473159680 has 672 divisors, whose sum is σ = 77694739200. Its totient is φ = 4968677376.

The previous prime is 20473159673. The next prime is 20473159691. The reversal of 20473159680 is 8695137402.

20473159680 is a `hidden beast` number, since 2 + 0 + 473 + 15 + 96 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 259153881 + ... + 259153959.

It is a 1-persistent number, because it is pandigital, but 2⋅20473159680 = 40946319360 is not.

Almost surely, 2^20473159680 is an apocalyptic number.

20473159680 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 20473159680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38847369600).

20473159680 is an abundant number, since it is smaller than the sum of its proper divisors (57221579520).

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

20473159680 is a wasteful number, since it uses less digits than its factorization.

20473159680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 20473159680 in words is "twenty billion, four hundred seventy-three million, one hundred fifty-nine thousand, six hundred eighty".