123511405432 has 8 divisors (see below), whose sum is σ = 231583885200. Its totient is φ = 61755702712.

The previous prime is 123511405403. The next prime is 123511405483. The reversal of 123511405432 is 234504115321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 123511405394 and 123511405403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7719462832 + ... + 7719462847.

It is an arithmetic number, because the mean of its divisors is an integer number (28947985650).

Almost surely, 2^123511405432 is an apocalyptic number.

It is an amenable number.

123511405432 is a deficient number, since it is larger than the sum of its proper divisors (108072479768).

123511405432 is a wasteful number, since it uses less digits than its factorization.

123511405432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15438925685 (or 15438925681 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 123511405432 in words is "one hundred twenty-three billion, five hundred eleven million, four hundred five thousand, four hundred thirty-two".