10123636887 has 48 divisors (see below), whose sum is σ = 18011488768. Its totient is φ = 5335813440.

The previous prime is 10123636879. The next prime is 10123636889. The reversal of 10123636887 is 78863632101.

10123636887 is a `hidden beast` number, since 1 + 0 + 1 + 2 + 3 + 636 + 8 + 8 + 7 = 666.

It is not a de Polignac number, because 10123636887 - 2³ = 10123636879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123636889) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1259712 + ... + 1267722.

Almost surely, 2^10123636887 is an apocalyptic number.

10123636887 is a deficient number, since it is larger than the sum of its proper divisors (7887851881).

10123636887 is a wasteful number, since it uses less digits than its factorization.

10123636887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580 (or 9577 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 10123636887 in words is "ten billion, one hundred twenty-three million, six hundred thirty-six thousand, eight hundred eighty-seven".