123487111392 has 96 divisors (see below), whose sum is σ = 329928681600. Its totient is φ = 40430227968.

The previous prime is 123487111381. The next prime is 123487111399. The reversal of 123487111392 is 293111784321.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123487111399) 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, 7122318 + ... + 7139634.

It is an arithmetic number, because the mean of its divisors is an integer number (3436757100).

Almost surely, 2^123487111392 is an apocalyptic number.

123487111392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123487111392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164964340800).

123487111392 is an abundant number, since it is smaller than the sum of its proper divisors (206441570208).

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

123487111392 is a wasteful number, since it uses less digits than its factorization.

123487111392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18648 (or 18640 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The spelling of 123487111392 in words is "one hundred twenty-three billion, four hundred eighty-seven million, one hundred eleven thousand, three hundred ninety-two".