20730888240786 has 96 divisors (see below), whose sum is σ = 48656164440000. Its totient is φ = 6356894463360.

The previous prime is 20730888240721. The next prime is 20730888240857. The reversal of 20730888240786 is 68704288803702.

20730888240786 is a `hidden beast` number, since 2 + 0 + 7 + 308 + 8 + 8 + 240 + 7 + 86 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4672776 + ... + 7955916.

It is an arithmetic number, because the mean of its divisors is an integer number (506835046250).

Almost surely, 2^{20730888240786} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20730888240786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24328082220000).

20730888240786 is an abundant number, since it is smaller than the sum of its proper divisors (27925276199214).

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

20730888240786 is a wasteful number, since it uses less digits than its factorization.

20730888240786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283704 (or 3283701 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 63.

The spelling of 20730888240786 in words is "twenty trillion, seven hundred thirty billion, eight hundred eighty-eight million, two hundred forty thousand, seven hundred eighty-six".