20714284528656 has 80 divisors (see below), whose sum is σ = 54399897880128. Its totient is φ = 6790226112000.

The previous prime is 20714284528627. The next prime is 20714284528657. The reversal of 20714284528656 is 65682548241702.

It is a super-3 number, since 3×20714284528656³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20714284528656.

It is not an unprimeable number, because it can be changed into a prime (20714284528657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14168731 + ... + 15562181.

Almost surely, 2^{20714284528656} 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 20714284528656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27199948940064).

20714284528656 is an abundant number, since it is smaller than the sum of its proper divisors (33685613351472).

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

20714284528656 is a wasteful number, since it uses less digits than its factorization.

20714284528656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398600 (or 1398594 counting only the distinct ones).

The product of its (nonzero) digits is 51609600, while the sum is 60.

The spelling of 20714284528656 in words is "twenty trillion, seven hundred fourteen billion, two hundred eighty-four million, five hundred twenty-eight thousand, six hundred fifty-six".