123607989987 has 8 divisors (see below), whose sum is σ = 165405638736. Its totient is φ = 82107833952.

The previous prime is 123607989929. The next prime is 123607990021. The reversal of 123607989987 is 789989706321.

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

It is not a de Polignac number, because 123607989987 - 2¹¹ = 123607987939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123607989907) 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, 74372208 + ... + 74373869.

It is an arithmetic number, because the mean of its divisors is an integer number (20675704842).

Almost surely, 2^123607989987 is an apocalyptic number.

123607989987 is a deficient number, since it is larger than the sum of its proper divisors (41797648749).

123607989987 is a wasteful number, since it uses less digits than its factorization.

123607989987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148746357.

The product of its (nonzero) digits is 82301184, while the sum is 69.

The spelling of 123607989987 in words is "one hundred twenty-three billion, six hundred seven million, nine hundred eighty-nine thousand, nine hundred eighty-seven".