201655697286523 has 2 divisors, whose sum is σ = 201655697286524. Its totient is φ = 201655697286522.

The previous prime is 201655697286497. The next prime is 201655697286541. The reversal of 201655697286523 is 325682796556102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201655697286523 - 2³³ = 201647107351931 is a prime.

It is a super-2 number, since 2×201655697286523² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201655697286223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100827848643261 + 100827848643262.

It is an arithmetic number, because the mean of its divisors is an integer number (100827848643262).

Almost surely, 2^{201655697286523} is an apocalyptic number.

201655697286523 is a deficient number, since it is larger than the sum of its proper divisors (1).

201655697286523 is an equidigital number, since it uses as much as digits as its factorization.

201655697286523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592000, while the sum is 67.

The spelling of 201655697286523 in words is "two hundred one trillion, six hundred fifty-five billion, six hundred ninety-seven million, two hundred eighty-six thousand, five hundred twenty-three".