201002011970857 has 2 divisors, whose sum is σ = 201002011970858. Its totient is φ = 201002011970856.

The previous prime is 201002011970839. The next prime is 201002011970869. The reversal of 201002011970857 is 758079110200102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164767619681856 + 36234392289001 = 12836184^2 + 6019501^2 .

It is a cyclic number.

It is not a de Polignac number, because 201002011970857 - 2¹¹ = 201002011968809 is a prime.

It is not a weakly prime, because it can be changed into another prime (201002011970057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100501005985428 + 100501005985429.

It is an arithmetic number, because the mean of its divisors is an integer number (100501005985429).

Almost surely, 2^{201002011970857} is an apocalyptic number.

It is an amenable number.

201002011970857 is a deficient number, since it is larger than the sum of its proper divisors (1).

201002011970857 is an equidigital number, since it uses as much as digits as its factorization.

201002011970857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 43.

The spelling of 201002011970857 in words is "two hundred one trillion, two billion, eleven million, nine hundred seventy thousand, eight hundred fifty-seven".