10642043647 has 2 divisors, whose sum is σ = 10642043648. Its totient is φ = 10642043646.

The previous prime is 10642043617. The next prime is 10642043651. The reversal of 10642043647 is 74634024601.

It is a strong prime.

It is an emirp because it is prime and its reverse (74634024601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10642043647 - 2⁷ = 10642043519 is a prime.

It is a super-2 number, since 2×10642043647² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10642043617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5321021823 + 5321021824.

It is an arithmetic number, because the mean of its divisors is an integer number (5321021824).

Almost surely, 2^10642043647 is an apocalyptic number.

10642043647 is a deficient number, since it is larger than the sum of its proper divisors (1).

10642043647 is an equidigital number, since it uses as much as digits as its factorization.

10642043647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 37.

The spelling of 10642043647 in words is "ten billion, six hundred forty-two million, forty-three thousand, six hundred forty-seven".