10570821681 has 8 divisors (see below), whose sum is σ = 16107918784. Its totient is φ = 6040469520.

The previous prime is 10570821673. The next prime is 10570821683. The reversal of 10570821681 is 18612807501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10570821681 - 2³ = 10570821673 is a prime.

It is a super-2 number, since 2×10570821681² (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 (10570821683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251686210 + ... + 251686251.

It is an arithmetic number, because the mean of its divisors is an integer number (2013489848).

Almost surely, 2^10570821681 is an apocalyptic number.

It is an amenable number.

10570821681 is a deficient number, since it is larger than the sum of its proper divisors (5537097103).

10570821681 is an equidigital number, since it uses as much as digits as its factorization.

10570821681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503372471.

The product of its (nonzero) digits is 26880, while the sum is 39.

The spelling of 10570821681 in words is "ten billion, five hundred seventy million, eight hundred twenty-one thousand, six hundred eighty-one".