123733107561 has 32 divisors (see below), whose sum is σ = 198509056000. Its totient is φ = 66969866880.

The previous prime is 123733107527. The next prime is 123733107571. The reversal of 123733107561 is 165701337321.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-123733107561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123733107571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2145696 + ... + 2202606.

It is an arithmetic number, because the mean of its divisors is an integer number (6203408000).

Almost surely, 2^123733107561 is an apocalyptic number.

It is an amenable number.

123733107561 is a deficient number, since it is larger than the sum of its proper divisors (74775948439).

123733107561 is a wasteful number, since it uses less digits than its factorization.

123733107561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62389.

The product of its (nonzero) digits is 79380, while the sum is 39.

The spelling of 123733107561 in words is "one hundred twenty-three billion, seven hundred thirty-three million, one hundred seven thousand, five hundred sixty-one".