20571382468 has 96 divisors (see below), whose sum is σ = 45313632000. Its totient is φ = 8119819008.

The previous prime is 20571382393. The next prime is 20571382487. The reversal of 20571382468 is 86428317502.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10147671 + ... + 10149697.

It is an arithmetic number, because the mean of its divisors is an integer number (472017000).

Almost surely, 2^20571382468 is an apocalyptic number.

20571382468 is a gapful number since it is divisible by the number (28) 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 20571382468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22656816000).

20571382468 is an abundant number, since it is smaller than the sum of its proper divisors (24742249532).

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

20571382468 is a wasteful number, since it uses less digits than its factorization.

20571382468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634 (or 2618 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 20571382468 in words is "twenty billion, five hundred seventy-one million, three hundred eighty-two thousand, four hundred sixty-eight".