123532340856 has 32 divisors (see below), whose sum is σ = 308842754640. Its totient is φ = 41175859968.

The previous prime is 123532340821. The next prime is 123532340857. The reversal of 123532340856 is 658043235321.

123532340856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123532340857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652890 + ... + 820566.

Almost surely, 2^123532340856 is an apocalyptic number.

It is an amenable number.

123532340856 is an abundant number, since it is smaller than the sum of its proper divisors (185310413784).

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

123532340856 is a wasteful number, since it uses less digits than its factorization.

123532340856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198383 (or 198379 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 123532340856 in words is "one hundred twenty-three billion, five hundred thirty-two million, three hundred forty thousand, eight hundred fifty-six".