123213260045 has 16 divisors (see below), whose sum is σ = 152983157760. Its totient is φ = 95153722944.

The previous prime is 123213260041. The next prime is 123213260077. The reversal of 123213260045 is 540062312321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123213260045 - 2² = 123213260041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123213260041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721364 + ... + 875666.

It is an arithmetic number, because the mean of its divisors is an integer number (9561447360).

Almost surely, 2^123213260045 is an apocalyptic number.

It is an amenable number.

123213260045 is a deficient number, since it is larger than the sum of its proper divisors (29769897715).

123213260045 is a wasteful number, since it uses less digits than its factorization.

123213260045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159844.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 123213260045 its reverse (540062312321), we get a palindrome (663275572366).

The spelling of 123213260045 in words is "one hundred twenty-three billion, two hundred thirteen million, two hundred sixty thousand, forty-five".