123607990081 has 2 divisors, whose sum is σ = 123607990082. Its totient is φ = 123607990080.

The previous prime is 123607990049. The next prime is 123607990117. The reversal of 123607990081 is 180099706321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93822753025 + 29785237056 = 306305^2 + 172584^2 .

It is an emirp because it is prime and its reverse (180099706321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123607990081 - 2⁵ = 123607990049 is a prime.

It is a super-2 number, since 2×123607990081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123607990021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61803995040 + 61803995041.

It is an arithmetic number, because the mean of its divisors is an integer number (61803995041).

Almost surely, 2^123607990081 is an apocalyptic number.

It is an amenable number.

123607990081 is a deficient number, since it is larger than the sum of its proper divisors (1).

123607990081 is an equidigital number, since it uses as much as digits as its factorization.

123607990081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 123607990081 in words is "one hundred twenty-three billion, six hundred seven million, nine hundred ninety thousand, eighty-one".