20335280652 has 18 divisors (see below), whose sum is σ = 51403070628. Its totient is φ = 6778426872.

The previous prime is 20335280639. The next prime is 20335280653. The reversal of 20335280652 is 25608253302.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 564868907 = 20335280652 / (2 + 0 + 3 + 3 + 5 + 2 + 8 + 0 + 6 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (20335280653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282434418 + ... + 282434489.

It is an arithmetic number, because the mean of its divisors is an integer number (2855726146).

Almost surely, 2^20335280652 is an apocalyptic number.

It is an amenable number.

20335280652 is an abundant number, since it is smaller than the sum of its proper divisors (31067789976).

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

20335280652 is a wasteful number, since it uses less digits than its factorization.

20335280652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564868917 (or 564868912 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 20335280652 in words is "twenty billion, three hundred thirty-five million, two hundred eighty thousand, six hundred fifty-two".