10721731045 has 16 divisors (see below), whose sum is σ = 13204224000. Its totient is φ = 8354622528.

The previous prime is 10721731019. The next prime is 10721731093. The reversal of 10721731045 is 54013712701.

10721731045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10721731045 is a prime.

It is a super-2 number, since 2×10721731045² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10721730998 and 10721731016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134565 + ... + 198874.

It is an arithmetic number, because the mean of its divisors is an integer number (825264000).

Almost surely, 2^10721731045 is an apocalyptic number.

It is an amenable number.

10721731045 is a deficient number, since it is larger than the sum of its proper divisors (2482492955).

10721731045 is a wasteful number, since it uses less digits than its factorization.

10721731045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333612.

The product of its (nonzero) digits is 5880, while the sum is 31.

The spelling of 10721731045 in words is "ten billion, seven hundred twenty-one million, seven hundred thirty-one thousand, forty-five".