10385647687 has 4 divisors (see below), whose sum is σ = 10386772416. Its totient is φ = 10384522960.

The previous prime is 10385647681. The next prime is 10385647691. The reversal of 10385647687 is 78674658301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10385647687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10385647681) 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, 548398 + ... + 567019.

It is an arithmetic number, because the mean of its divisors is an integer number (2596693104).

Almost surely, 2^10385647687 is an apocalyptic number.

10385647687 is a deficient number, since it is larger than the sum of its proper divisors (1124729).

10385647687 is an equidigital number, since it uses as much as digits as its factorization.

10385647687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124728.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 10385647687 in words is "ten billion, three hundred eighty-five million, six hundred forty-seven thousand, six hundred eighty-seven".