10721731075 has 12 divisors (see below), whose sum is σ = 14503578408. Its totient is φ = 7797622400.

The previous prime is 10721731019. The next prime is 10721731093. The reversal of 10721731075 is 57013712701.

It is a happy number.

It is not a de Polignac number, because 10721731075 - 2¹⁵ = 10721698307 is a prime.

It is a super-2 number, since 2×10721731075² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10721731075.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19493782 + ... + 19494331.

It is an arithmetic number, because the mean of its divisors is an integer number (1208631534).

Almost surely, 2^10721731075 is an apocalyptic number.

10721731075 is a deficient number, since it is larger than the sum of its proper divisors (3781847333).

10721731075 is a wasteful number, since it uses less digits than its factorization.

10721731075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38988134 (or 38988129 counting only the distinct ones).

The product of its (nonzero) digits is 10290, while the sum is 34.

The spelling of 10721731075 in words is "ten billion, seven hundred twenty-one million, seven hundred thirty-one thousand, seventy-five".