19820527056 has 60 divisors (see below), whose sum is σ = 60512674560. Its totient is φ = 6006219840.

The previous prime is 19820527033. The next prime is 19820527087. The reversal of 19820527056 is 65072502891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6254896 + ... + 6258063.

It is an arithmetic number, because the mean of its divisors is an integer number (1008544576).

Almost surely, 2^19820527056 is an apocalyptic number.

19820527056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19820527056 is an abundant number, since it is smaller than the sum of its proper divisors (40692147504).

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

19820527056 is a wasteful number, since it uses less digits than its factorization.

19820527056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12512984 (or 12512975 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 19820527056 in words is "nineteen billion, eight hundred twenty million, five hundred twenty-seven thousand, fifty-six".