201155665355 has 8 divisors (see below), whose sum is σ = 244442328000. Its totient is φ = 158887512576.

The previous prime is 201155665259. The next prime is 201155665357. The reversal of 201155665355 is 553566551102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201155665355 - 2⁸ = 201155665099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201155665357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254627030 + ... + 254627819.

It is an arithmetic number, because the mean of its divisors is an integer number (30555291000).

Almost surely, 2^201155665355 is an apocalyptic number.

201155665355 is a deficient number, since it is larger than the sum of its proper divisors (43286662645).

201155665355 is an equidigital number, since it uses as much as digits as its factorization.

201155665355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509254933.

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 201155665355 in words is "two hundred one billion, one hundred fifty-five million, six hundred sixty-five thousand, three hundred fifty-five".