20369043648 has 112 divisors (see below), whose sum is σ = 59931970560. Its totient is φ = 6783927552.

The previous prime is 20369043637. The next prime is 20369043671. The reversal of 20369043648 is 84634096302.

20369043648 is a `hidden beast` number, since 203 + 6 + 9 + 0 + 436 + 4 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2357865 + ... + 2366487.

It is an arithmetic number, because the mean of its divisors is an integer number (535106880).

Almost surely, 2^20369043648 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 20369043648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29965985280).

20369043648 is an abundant number, since it is smaller than the sum of its proper divisors (39562926912).

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

20369043648 is a wasteful number, since it uses less digits than its factorization.

20369043648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011 (or 9995 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 20369043648 in words is "twenty billion, three hundred sixty-nine million, forty-three thousand, six hundred forty-eight".