20247650396064 has 480 divisors, whose sum is σ = 77600738831616. Its totient is φ = 5025918689280.

The previous prime is 20247650396009. The next prime is 20247650396131. The reversal of 20247650396064 is 46069305674202.

20247650396064 is a `hidden beast` number, since 2 + 0 + 2 + 4 + 76 + 503 + 9 + 6 + 0 + 64 = 666.

It is a super-2 number, since 2×20247650396064² (a number of 27 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20247650396064.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1485069 + ... + 6534579.

Almost surely, 2^{20247650396064} is an apocalyptic number.

20247650396064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20247650396064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38800369415808).

20247650396064 is an abundant number, since it is smaller than the sum of its proper divisors (57353088435552).

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

20247650396064 is a wasteful number, since it uses less digits than its factorization.

20247650396064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049570 (or 5049553 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 54.

The spelling of 20247650396064 in words is "twenty trillion, two hundred forty-seven billion, six hundred fifty million, three hundred ninety-six thousand, sixty-four".