202151128889 has 2 divisors, whose sum is σ = 202151128890. Its totient is φ = 202151128888.

The previous prime is 202151128853. The next prime is 202151128961. The reversal of 202151128889 is 988821151202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161994175225 + 40156953664 = 402485^2 + 200392^2 .

It is a cyclic number.

It is not a de Polignac number, because 202151128889 - 2¹² = 202151124793 is a prime.

It is a super-2 number, since 2×202151128889² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202151128589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101075564444 + 101075564445.

It is an arithmetic number, because the mean of its divisors is an integer number (101075564445).

Almost surely, 2^202151128889 is an apocalyptic number.

It is an amenable number.

202151128889 is a deficient number, since it is larger than the sum of its proper divisors (1).

202151128889 is an equidigital number, since it uses as much as digits as its factorization.

202151128889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 47.

The spelling of 202151128889 in words is "two hundred two billion, one hundred fifty-one million, one hundred twenty-eight thousand, eight hundred eighty-nine".