201161367557 has 32 divisors (see below), whose sum is σ = 219975634944. Its totient is φ = 183229516800.

The previous prime is 201161367527. The next prime is 201161367571. The reversal of 201161367557 is 755763161102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201161367557 - 2⁶ = 201161367493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201161367527) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 115542707 + ... + 115544447.

It is an arithmetic number, because the mean of its divisors is an integer number (6874238592).

Almost surely, 2^201161367557 is an apocalyptic number.

It is an amenable number.

201161367557 is a deficient number, since it is larger than the sum of its proper divisors (18814267387).

201161367557 is a wasteful number, since it uses less digits than its factorization.

201161367557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549.

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 201161367557 in words is "two hundred one billion, one hundred sixty-one million, three hundred sixty-seven thousand, five hundred fifty-seven".