20281617336 has 32 divisors (see below), whose sum is σ = 53372678400. Its totient is φ = 6404721120.

The previous prime is 20281617329. The next prime is 20281617353. The reversal of 20281617336 is 63371618202.

It is a super-2 number, since 2×20281617336² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20281617294 and 20281617303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22238160 + ... + 22239071.

It is an arithmetic number, because the mean of its divisors is an integer number (1667896200).

Almost surely, 2^20281617336 is an apocalyptic number.

It is an amenable number.

20281617336 is an abundant number, since it is smaller than the sum of its proper divisors (33091061064).

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

20281617336 is a wasteful number, since it uses less digits than its factorization.

20281617336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44477259 (or 44477255 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 20281617336 in words is "twenty billion, two hundred eighty-one million, six hundred seventeen thousand, three hundred thirty-six".