123598100081 has 8 divisors (see below), whose sum is σ = 126253810944. Its totient is φ = 120967803040.

The previous prime is 123598100071. The next prime is 123598100099. The reversal of 123598100081 is 180001895321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123598100081 is a prime.

It is a super-2 number, since 2×123598100081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123598100071) 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, 6343625 + ... + 6363078.

It is an arithmetic number, because the mean of its divisors is an integer number (15781726368).

Almost surely, 2^123598100081 is an apocalyptic number.

It is an amenable number.

123598100081 is a deficient number, since it is larger than the sum of its proper divisors (2655710863).

123598100081 is a wasteful number, since it uses less digits than its factorization.

123598100081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12706911.

The product of its (nonzero) digits is 17280, while the sum is 38.

The spelling of 123598100081 in words is "one hundred twenty-three billion, five hundred ninety-eight million, one hundred thousand, eighty-one".