10668409487 has 4 divisors (see below), whose sum is σ = 10728009720. Its totient is φ = 10608809256.

The previous prime is 10668409459. The next prime is 10668409523. The reversal of 10668409487 is 78490486601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10668409487 - 2²⁰ = 10667360911 is a prime.

It is a super-2 number, since 2×10668409487² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10668409457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29799848 + ... + 29800205.

It is an arithmetic number, because the mean of its divisors is an integer number (2682002430).

Almost surely, 2^10668409487 is an apocalyptic number.

10668409487 is a deficient number, since it is larger than the sum of its proper divisors (59600233).

10668409487 is an equidigital number, since it uses as much as digits as its factorization.

10668409487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59600232.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 10668409487 in words is "ten billion, six hundred sixty-eight million, four hundred nine thousand, four hundred eighty-seven".