20636352413 has 4 divisors (see below), whose sum is σ = 20784815520. Its totient is φ = 20487889308.

The previous prime is 20636352403. The next prime is 20636352437. The reversal of 20636352413 is 31425363602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20636352413 - 2⁶ = 20636352349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20636352403) 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, 74231345 + ... + 74231622.

It is an arithmetic number, because the mean of its divisors is an integer number (5196203880).

Almost surely, 2^20636352413 is an apocalyptic number.

It is an amenable number.

20636352413 is a deficient number, since it is larger than the sum of its proper divisors (148463107).

20636352413 is a wasteful number, since it uses less digits than its factorization.

20636352413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148463106.

The product of its (nonzero) digits is 77760, while the sum is 35.

The spelling of 20636352413 in words is "twenty billion, six hundred thirty-six million, three hundred fifty-two thousand, four hundred thirteen".