20665293036 has 48 divisors (see below), whose sum is σ = 50618158080. Its totient is φ = 6553229760.

The previous prime is 20665292971. The next prime is 20665293037. The reversal of 20665293036 is 63039256602.

It is not an unprimeable number, because it can be changed into a prime (20665293037) 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, 448831 + ... + 492726.

It is an arithmetic number, because the mean of its divisors is an integer number (1054544960).

Almost surely, 2^20665293036 is an apocalyptic number.

It is an amenable number.

20665293036 is an abundant number, since it is smaller than the sum of its proper divisors (29952865044).

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

20665293036 is a wasteful number, since it uses less digits than its factorization.

20665293036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941654 (or 941652 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 42.

The spelling of 20665293036 in words is "twenty billion, six hundred sixty-five million, two hundred ninety-three thousand, thirty-six".