20652267413 has 4 divisors (see below), whose sum is σ = 20653347660. Its totient is φ = 20651187168.

The previous prime is 20652267397. The next prime is 20652267451. The reversal of 20652267413 is 31476225602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15850054609 + 4802212804 = 125897^2 + 69298^2 .

It is a cyclic number.

It is not a de Polignac number, because 20652267413 - 2⁴ = 20652267397 is a prime.

It is a super-2 number, since 2×20652267413² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20652267463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510920 + ... + 549857.

It is an arithmetic number, because the mean of its divisors is an integer number (5163336915).

Almost surely, 2^20652267413 is an apocalyptic number.

It is an amenable number.

20652267413 is a deficient number, since it is larger than the sum of its proper divisors (1080247).

20652267413 is a wasteful number, since it uses less digits than its factorization.

20652267413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080246.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 20652267413 in words is "twenty billion, six hundred fifty-two million, two hundred sixty-seven thousand, four hundred thirteen".