20783270652516 has 96 divisors (see below), whose sum is σ = 54124983091200. Its totient is φ = 6896595363840.

The previous prime is 20783270652503. The next prime is 20783270652523. The reversal of 20783270652516 is 61525607238702.

20783270652516 is a `hidden beast` number, since 2 + 0 + 7 + 8 + 3 + 2 + 70 + 6 + 52 + 516 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202528516 + ... + 202631108.

It is an arithmetic number, because the mean of its divisors is an integer number (563801907200).

Almost surely, 2^{20783270652516} 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 20783270652516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27062491545600).

20783270652516 is an abundant number, since it is smaller than the sum of its proper divisors (33341712438684).

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

20783270652516 is a wasteful number, since it uses less digits than its factorization.

20783270652516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111026 (or 111018 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 20783270652516 in words is "twenty trillion, seven hundred eighty-three billion, two hundred seventy million, six hundred fifty-two thousand, five hundred sixteen".