201909970036 has 6 divisors (see below), whose sum is σ = 353342447570. Its totient is φ = 100954985016.

The previous prime is 201909970021. The next prime is 201909970043. The reversal of 201909970036 is 630079909102.

It can be written as a sum of positive squares in only one way, i.e., 104203713636 + 97706256400 = 322806^2 + 312580^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25238746251 + ... + 25238746258.

Almost surely, 2^201909970036 is an apocalyptic number.

It is an amenable number.

201909970036 is a deficient number, since it is larger than the sum of its proper divisors (151432477534).

201909970036 is a wasteful number, since it uses less digits than its factorization.

201909970036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50477492513 (or 50477492511 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 46.

The spelling of 201909970036 in words is "two hundred one billion, nine hundred nine million, nine hundred seventy thousand, thirty-six".