20357601211 has 2 divisors, whose sum is σ = 20357601212. Its totient is φ = 20357601210.

The previous prime is 20357601191. The next prime is 20357601223. The reversal of 20357601211 is 11210675302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20357601211 is a prime.

It is a super-2 number, since 2×20357601211² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20357601211.

It is not a weakly prime, because it can be changed into another prime (20357602211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10178800605 + 10178800606.

It is an arithmetic number, because the mean of its divisors is an integer number (10178800606).

Almost surely, 2^20357601211 is an apocalyptic number.

20357601211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20357601211 is an equidigital number, since it uses as much as digits as its factorization.

20357601211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The spelling of 20357601211 in words is "twenty billion, three hundred fifty-seven million, six hundred one thousand, two hundred eleven".