201156065001 has 6 divisors (see below), whose sum is σ = 290558760570. Its totient is φ = 134104043328.

The previous prime is 201156064943. The next prime is 201156065017. The reversal of 201156065001 is 100560651102.

It is a happy number.

201156065001 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 5 + 6 + 0 + 650 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 147704936976 + 53451128025 = 384324^2 + 231195^2 .

It is not a de Polignac number, because 201156065001 - 2⁷ = 201156064873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201156065041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11175336936 + ... + 11175336953.

It is an arithmetic number, because the mean of its divisors is an integer number (48426460095).

Almost surely, 2^201156065001 is an apocalyptic number.

It is an amenable number.

201156065001 is a deficient number, since it is larger than the sum of its proper divisors (89402695569).

201156065001 is a wasteful number, since it uses less digits than its factorization.

201156065001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22350673895 (or 22350673892 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 201156065001 in words is "two hundred one billion, one hundred fifty-six million, sixty-five thousand, one".