20832351664 has 80 divisors (see below), whose sum is σ = 42333290496. Its totient is φ = 9919641600.

The previous prime is 20832351653. The next prime is 20832351671. The reversal of 20832351664 is 46615323802.

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, 9188259 + ... + 9190525.

Almost surely, 2^20832351664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20832351664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21166645248).

20832351664 is an abundant number, since it is smaller than the sum of its proper divisors (21500938832).

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

20832351664 is a wasteful number, since it uses less digits than its factorization.

20832351664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594 (or 2588 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 20832351664 in words is "twenty billion, eight hundred thirty-two million, three hundred fifty-one thousand, six hundred sixty-four".