10071447681 has 4 divisors (see below), whose sum is σ = 13428596912. Its totient is φ = 6714298452.

The previous prime is 10071447647. The next prime is 10071447689. The reversal of 10071447681 is 18674417001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10071447681 - 2¹⁷ = 10071316609 is a prime.

It is a super-2 number, since 2×10071447681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10071447689) 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, 1678574611 + ... + 1678574616.

It is an arithmetic number, because the mean of its divisors is an integer number (3357149228).

Almost surely, 2^10071447681 is an apocalyptic number.

It is an amenable number.

10071447681 is a deficient number, since it is larger than the sum of its proper divisors (3357149231).

10071447681 is an equidigital number, since it uses as much as digits as its factorization.

10071447681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357149230.

The product of its (nonzero) digits is 37632, while the sum is 39.

The spelling of 10071447681 in words is "ten billion, seventy-one million, four hundred forty-seven thousand, six hundred eighty-one".