201655563662771 has 8 divisors (see below), whose sum is σ = 213692240829024. Its totient is φ = 189638284850560.

The previous prime is 201655563662747. The next prime is 201655563662803. The reversal of 201655563662771 is 177266365556102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201655563662771 is a prime.

It is a super-2 number, since 2×201655563662771² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201655563662711) 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, 4849567100 + ... + 4849608681.

It is an arithmetic number, because the mean of its divisors is an integer number (26711530103628).

Almost surely, 2^{201655563662771} is an apocalyptic number.

201655563662771 is a deficient number, since it is larger than the sum of its proper divisors (12036677166253).

201655563662771 is a wasteful number, since it uses less digits than its factorization.

201655563662771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9699177021.

The product of its (nonzero) digits is 95256000, while the sum is 62.

The spelling of 201655563662771 in words is "two hundred one trillion, six hundred fifty-five billion, five hundred sixty-three million, six hundred sixty-two thousand, seven hundred seventy-one".