201320426655 has 12 divisors (see below), whose sum is σ = 348955406280. Its totient is φ = 107370894192.

The previous prime is 201320426617. The next prime is 201320426677. The reversal of 201320426655 is 556624023102.

201320426655 is a `hidden beast` number, since 20 + 1 + 320 + 4 + 266 + 55 = 666.

It is not a de Polignac number, because 201320426655 - 2⁹ = 201320426143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2236893585 + ... + 2236893674.

It is an arithmetic number, because the mean of its divisors is an integer number (29079617190).

Almost surely, 2^201320426655 is an apocalyptic number.

201320426655 is a deficient number, since it is larger than the sum of its proper divisors (147634979625).

201320426655 is a wasteful number, since it uses less digits than its factorization.

201320426655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473787270 (or 4473787267 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 201320426655 its reverse (556624023102), we get a palindrome (757944449757).

The spelling of 201320426655 in words is "two hundred one billion, three hundred twenty million, four hundred twenty-six thousand, six hundred fifty-five".