10571331493 has 4 divisors (see below), whose sum is σ = 11193174540. Its totient is φ = 9949488448.

The previous prime is 10571331481. The next prime is 10571331499. The reversal of 10571331493 is 39413317501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9888711364 + 682620129 = 99442^2 + 26127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10571331493 is a prime.

It is a super-2 number, since 2×10571331493² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10571331499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310921498 + ... + 310921531.

It is an arithmetic number, because the mean of its divisors is an integer number (2798293635).

Almost surely, 2^10571331493 is an apocalyptic number.

It is an amenable number.

10571331493 is a deficient number, since it is larger than the sum of its proper divisors (621843047).

10571331493 is an equidigital number, since it uses as much as digits as its factorization.

10571331493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621843046.

The product of its (nonzero) digits is 34020, while the sum is 37.

Adding to 10571331493 its reverse (39413317501), we get a palindrome (49984648994).

The spelling of 10571331493 in words is "ten billion, five hundred seventy-one million, three hundred thirty-one thousand, four hundred ninety-three".