20135573201 has 2 divisors, whose sum is σ = 20135573202. Its totient is φ = 20135573200.

The previous prime is 20135573179. The next prime is 20135573243. The reversal of 20135573201 is 10237553102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16562403025 + 3573170176 = 128695^2 + 59776^2 .

It is a cyclic number.

It is not a de Polignac number, because 20135573201 - 2¹⁸ = 20135311057 is a prime.

It is not a weakly prime, because it can be changed into another prime (20135573401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067786600 + 10067786601.

It is an arithmetic number, because the mean of its divisors is an integer number (10067786601).

Almost surely, 2^20135573201 is an apocalyptic number.

It is an amenable number.

20135573201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20135573201 is an equidigital number, since it uses as much as digits as its factorization.

20135573201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The spelling of 20135573201 in words is "twenty billion, one hundred thirty-five million, five hundred seventy-three thousand, two hundred one".