123258075783808 has 128 divisors (see below), whose sum is σ = 291359368995840. Its totient is φ = 50825362636800.

The previous prime is 123258075783743. The next prime is 123258075783841. The reversal of 123258075783808 is 808387570852321.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×123258075783808² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8020113 + ... + 17630608.

It is an arithmetic number, because the mean of its divisors is an integer number (2276245070280).

Almost surely, 2^{123258075783808} is an apocalyptic number.

It is an amenable number.

123258075783808 is an abundant number, since it is smaller than the sum of its proper divisors (168101293212032).

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

123258075783808 is a wasteful number, since it uses less digits than its factorization.

123258075783808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25650946 (or 25650934 counting only the distinct ones).

The product of its (nonzero) digits is 180633600, while the sum is 67.

The spelling of 123258075783808 in words is "one hundred twenty-three trillion, two hundred fifty-eight billion, seventy-five million, seven hundred eighty-three thousand, eight hundred eight".