123813558258 has 32 divisors (see below), whose sum is σ = 266775054336. Its totient is φ = 38082236928.

The previous prime is 123813558251. The next prime is 123813558259. The reversal of 123813558258 is 852855318321.

It is a self number, because there is not a number n which added to its sum of digits gives 123813558258.

It is not an unprimeable number, because it can be changed into a prime (123813558251) 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, 85791 + ... + 504962.

It is an arithmetic number, because the mean of its divisors is an integer number (8336720448).

Almost surely, 2^123813558258 is an apocalyptic number.

123813558258 is an abundant number, since it is smaller than the sum of its proper divisors (142961496078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123813558258 is a wasteful number, since it uses less digits than its factorization.

123813558258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593458.

The product of its digits is 2304000, while the sum is 51.

The spelling of 123813558258 in words is "one hundred twenty-three billion, eight hundred thirteen million, five hundred fifty-eight thousand, two hundred fifty-eight".