201438128260 has 12 divisors (see below), whose sum is σ = 423020069388. Its totient is φ = 80575251296.

The previous prime is 201438128257. The next prime is 201438128263. The reversal of 201438128260 is 62821834102.

It is a happy number.

201438128260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201438128257) and next prime (201438128263).

It can be written as a sum of positive squares in 2 ways, for example, as 60433372224 + 141004756036 = 245832^2 + 375506^2 .

It is not an unprimeable number, because it can be changed into a prime (201438128263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5035953187 + ... + 5035953226.

It is an arithmetic number, because the mean of its divisors is an integer number (35251672449).

Almost surely, 2^201438128260 is an apocalyptic number.

201438128260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201438128260 is an abundant number, since it is smaller than the sum of its proper divisors (221581941128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201438128260 is a wasteful number, since it uses less digits than its factorization.

201438128260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10071906422 (or 10071906420 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 201438128260 in words is "two hundred one billion, four hundred thirty-eight million, one hundred twenty-eight thousand, two hundred sixty".