20475565464312 has 512 divisors, whose sum is σ = 69458853888000. Its totient is φ = 5462564728320.

The previous prime is 20475565464301. The next prime is 20475565464329. The reversal of 20475565464312 is 21346456557402.

It is a happy number.

20475565464312 is a `hidden beast` number, since 2 + 0 + 4 + 7 + 5 + 56 + 546 + 43 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2477977893 + ... + 2477986155.

It is an arithmetic number, because the mean of its divisors is an integer number (135661824000).

Almost surely, 2^{20475565464312} 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 20475565464312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34729426944000).

20475565464312 is an abundant number, since it is smaller than the sum of its proper divisors (48983288423688).

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

20475565464312 is a wasteful number, since it uses less digits than its factorization.

20475565464312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10168 (or 10158 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 54.

The spelling of 20475565464312 in words is "twenty trillion, four hundred seventy-five billion, five hundred sixty-five million, four hundred sixty-four thousand, three hundred twelve".