10018971647 has 4 divisors (see below), whose sum is σ = 10022383560. Its totient is φ = 10015559736.

The previous prime is 10018971617. The next prime is 10018971671. The reversal of 10018971647 is 74617981001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74617981001 = 7723 ⋅9661787.

It is a cyclic number.

It is not a de Polignac number, because 10018971647 - 2¹⁶ = 10018906111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10018971598 and 10018971607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10018971617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1701548 + ... + 1707425.

It is an arithmetic number, because the mean of its divisors is an integer number (2505595890).

Almost surely, 2^10018971647 is an apocalyptic number.

10018971647 is a deficient number, since it is larger than the sum of its proper divisors (3411913).

10018971647 is an equidigital number, since it uses as much as digits as its factorization.

10018971647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411912.

The product of its (nonzero) digits is 84672, while the sum is 44.

The spelling of 10018971647 in words is "ten billion, eighteen million, nine hundred seventy-one thousand, six hundred forty-seven".