20801632324840 has 32 divisors (see below), whose sum is σ = 46804528980000. Its totient is φ = 8320500707904.

The previous prime is 20801632324793. The next prime is 20801632324871. The reversal of 20801632324840 is 4842323610802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2530290 + ... + 6928609.

It is an arithmetic number, because the mean of its divisors is an integer number (1462641530625).

Almost surely, 2^{20801632324840} is an apocalyptic number.

20801632324840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20801632324840 is an abundant number, since it is smaller than the sum of its proper divisors (26002896655160).

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

20801632324840 is a wasteful number, since it uses less digits than its factorization.

20801632324840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9513889 (or 9513885 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 20801632324840 in words is "twenty trillion, eight hundred one billion, six hundred thirty-two million, three hundred twenty-four thousand, eight hundred forty".