123265788100 has 72 divisors (see below), whose sum is σ = 329214498368. Its totient is φ = 39011587200.

The previous prime is 123265788089. The next prime is 123265788101. The reversal of 123265788100 is 1887562321.

It is a super-2 number, since 2×123265788100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123265788101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6763746 + ... + 6781945.

Almost surely, 2^123265788100 is an apocalyptic number.

123265788100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123265788100 is an abundant number, since it is smaller than the sum of its proper divisors (205948710268).

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

123265788100 is a wasteful number, since it uses less digits than its factorization.

123265788100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13545725 (or 13545718 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 123265788100 in words is "one hundred twenty-three billion, two hundred sixty-five million, seven hundred eighty-eight thousand, one hundred".