20357267361 has 4 divisors (see below), whose sum is σ = 27143023152. Its totient is φ = 13571511572.

The previous prime is 20357267351. The next prime is 20357267377. The reversal of 20357267361 is 16376275302.

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 20357267361 - 2⁹ = 20357266849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20357267351) 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, 3392877891 + ... + 3392877896.

It is an arithmetic number, because the mean of its divisors is an integer number (6785755788).

Almost surely, 2^20357267361 is an apocalyptic number.

It is an amenable number.

20357267361 is a deficient number, since it is larger than the sum of its proper divisors (6785755791).

20357267361 is an equidigital number, since it uses as much as digits as its factorization.

20357267361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6785755790.

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 20357267361 in words is "twenty billion, three hundred fifty-seven million, two hundred sixty-seven thousand, three hundred sixty-one".