201123465555 has 8 divisors (see below), whose sum is σ = 321797544912. Its totient is φ = 107265848288.

The previous prime is 201123465503. The next prime is 201123465607. The reversal of 201123465555 is 555564321102.

It is an interprime number because it is at equal distance from previous prime (201123465503) and next prime (201123465607).

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 201123465555 - 2²¹ = 201121368403 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6704115504 + ... + 6704115533.

It is an arithmetic number, because the mean of its divisors is an integer number (40224693114).

Almost surely, 2^201123465555 is an apocalyptic number.

201123465555 is a deficient number, since it is larger than the sum of its proper divisors (120674079357).

201123465555 is a wasteful number, since it uses less digits than its factorization.

201123465555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13408231045.

The product of its (nonzero) digits is 180000, while the sum is 39.

Adding to 201123465555 its reverse (555564321102), we get a palindrome (756687786657).

The spelling of 201123465555 in words is "two hundred one billion, one hundred twenty-three million, four hundred sixty-five thousand, five hundred fifty-five".