20815755834032 has 40 divisors (see below), whose sum is σ = 43086815928000. Its totient is φ = 9712929264192.

The previous prime is 20815755834023. The next prime is 20815755834037. The reversal of 20815755834032 is 23043855751802.

It is not an unprimeable number, because it can be changed into a prime (20815755834037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510971282 + ... + 511012017.

It is an arithmetic number, because the mean of its divisors is an integer number (1077170398200).

Almost surely, 2^{20815755834032} is an apocalyptic number.

It is an amenable number.

20815755834032 is an abundant number, since it is smaller than the sum of its proper divisors (22271060093968).

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

20815755834032 is a wasteful number, since it uses less digits than its factorization.

20815755834032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021983393 (or 1021983387 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 53.

The spelling of 20815755834032 in words is "twenty trillion, eight hundred fifteen billion, seven hundred fifty-five million, eight hundred thirty-four thousand, thirty-two".