20472754860 has 168 divisors, whose sum is σ = 65370878496. Its totient is φ = 5382236160.

The previous prime is 20472754859. The next prime is 20472754873. The reversal of 20472754860 is 6845727402.

It is a happy number.

20472754860 is a `hidden beast` number, since 2 + 0 + 47 + 2 + 7 + 548 + 60 = 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 55 ways as a sum of consecutive naturals, for example, 1025292 + ... + 1045068.

It is an arithmetic number, because the mean of its divisors is an integer number (389112372).

Almost surely, 2^20472754860 is an apocalyptic number.

20472754860 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 20472754860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32685439248).

20472754860 is an abundant number, since it is smaller than the sum of its proper divisors (44898123636).

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

20472754860 is a wasteful number, since it uses less digits than its factorization.

20472754860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19875 (or 19858 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 20472754860 in words is "twenty billion, four hundred seventy-two million, seven hundred fifty-four thousand, eight hundred sixty".