20364245736 has 128 divisors (see below), whose sum is σ = 54350714880. Its totient is φ = 6336285696.

The previous prime is 20364245729. The next prime is 20364245767. The reversal of 20364245736 is 63754246302.

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, 45968731 + ... + 45969173.

It is an arithmetic number, because the mean of its divisors is an integer number (424614960).

Almost surely, 2^20364245736 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 20364245736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27175357440).

20364245736 is an abundant number, since it is smaller than the sum of its proper divisors (33986469144).

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

20364245736 is a wasteful number, since it uses less digits than its factorization.

20364245736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 42.

The spelling of 20364245736 in words is "twenty billion, three hundred sixty-four million, two hundred forty-five thousand, seven hundred thirty-six".