123405433152 has 56 divisors (see below), whose sum is σ = 326541384000. Its totient is φ = 41131216896.

The previous prime is 123405433139. The next prime is 123405433163. The reversal of 123405433152 is 251334504321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2548624 + ... + 2596592.

Almost surely, 2^123405433152 is an apocalyptic number.

123405433152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123405433152 is an abundant number, since it is smaller than the sum of its proper divisors (203135950848).

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

123405433152 is a wasteful number, since it uses less digits than its factorization.

123405433152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61383 (or 61373 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 123405433152 its reverse (251334504321), we get a palindrome (374739937473).

The spelling of 123405433152 in words is "one hundred twenty-three billion, four hundred five million, four hundred thirty-three thousand, one hundred fifty-two".