20581884515852 has 48 divisors (see below), whose sum is σ = 39401209209600. Its totient is φ = 9329593085760.

The previous prime is 20581884515783. The next prime is 20581884515879. The reversal of 20581884515852 is 25851548818502.

It is a super-2 number, since 2×20581884515852² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27831593 + ... + 28561535.

It is an arithmetic number, because the mean of its divisors is an integer number (820858525200).

Almost surely, 2^{20581884515852} is an apocalyptic number.

20581884515852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20581884515852 is a deficient number, since it is larger than the sum of its proper divisors (18819324693748).

20581884515852 is a wasteful number, since it uses less digits than its factorization.

20581884515852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731726 (or 731724 counting only the distinct ones).

The product of its (nonzero) digits is 40960000, while the sum is 62.

The spelling of 20581884515852 in words is "twenty trillion, five hundred eighty-one billion, eight hundred eighty-four million, five hundred fifteen thousand, eight hundred fifty-two".