122553023505 has 48 divisors (see below), whose sum is σ = 218259767040. Its totient is φ = 58667431680.

The previous prime is 122553023501. The next prime is 122553023513. The reversal of 122553023505 is 505320355221.

It is not a de Polignac number, because 122553023505 - 2² = 122553023501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (122553023501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 283972 + ... + 570741.

It is an arithmetic number, because the mean of its divisors is an integer number (4547078480).

Almost surely, 2^122553023505 is an apocalyptic number.

122553023505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122553023505 is a deficient number, since it is larger than the sum of its proper divisors (95706743535).

122553023505 is a wasteful number, since it uses less digits than its factorization.

122553023505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854822 (or 854811 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 122553023505 its reverse (505320355221), we get a palindrome (627873378726).

The spelling of 122553023505 in words is "one hundred twenty-two billion, five hundred fifty-three million, twenty-three thousand, five hundred five".