202000070721689 has 2 divisors, whose sum is σ = 202000070721690. Its totient is φ = 202000070721688.

The previous prime is 202000070721643. The next prime is 202000070721763. The reversal of 202000070721689 is 986127070000202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199842894096400 + 2157176625289 = 14136580^2 + 1468733^2 .

It is a cyclic number.

It is not a de Polignac number, because 202000070721689 - 2⁸ = 202000070721433 is a prime.

It is not a weakly prime, because it can be changed into another prime (202000070721619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000035360844 + 101000035360845.

It is an arithmetic number, because the mean of its divisors is an integer number (101000035360845).

Almost surely, 2^{202000070721689} is an apocalyptic number.

It is an amenable number.

202000070721689 is a deficient number, since it is larger than the sum of its proper divisors (1).

202000070721689 is an equidigital number, since it uses as much as digits as its factorization.

202000070721689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 202000070721689 in words is "two hundred two trillion, seventy million, seven hundred twenty-one thousand, six hundred eighty-nine".