9581472372671 has 2 divisors, whose sum is σ = 9581472372672. Its totient is φ = 9581472372670.

The previous prime is 9581472372629. The next prime is 9581472372679. The reversal of 9581472372671 is 1762732741859.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9581472372671 - 2¹⁸ = 9581472110527 is a prime.

It is a super-2 number, since 2×9581472372671² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9581472372679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4790736186335 + 4790736186336.

It is an arithmetic number, because the mean of its divisors is an integer number (4790736186336).

Almost surely, 2^{9581472372671} is an apocalyptic number.

9581472372671 is a deficient number, since it is larger than the sum of its proper divisors (1).

9581472372671 is an equidigital number, since it uses as much as digits as its factorization.

9581472372671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 62.

The spelling of 9581472372671 in words is "nine trillion, five hundred eighty-one billion, four hundred seventy-two million, three hundred seventy-two thousand, six hundred seventy-one".