10721335873 has 8 divisors (see below), whose sum is σ = 11108359080. Its totient is φ = 10335467520.

The previous prime is 10721335871. The next prime is 10721335967. The reversal of 10721335873 is 37853312701.

It can be written as a sum of positive squares in 4 ways, for example, as 7566042289 + 3155293584 = 86983^2 + 56172^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10721335873 - 2¹ = 10721335871 is a prime.

It is a super-2 number, since 2×10721335873² (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 (10721335871) 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, 269790 + ... + 306967.

It is an arithmetic number, because the mean of its divisors is an integer number (1388544885).

Almost surely, 2^10721335873 is an apocalyptic number.

It is an amenable number.

10721335873 is a deficient number, since it is larger than the sum of its proper divisors (387023207).

10721335873 is an equidigital number, since it uses as much as digits as its factorization.

10721335873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577427.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 10721335873 in words is "ten billion, seven hundred twenty-one million, three hundred thirty-five thousand, eight hundred seventy-three".