10721699999 has 2 divisors, whose sum is σ = 10721700000. Its totient is φ = 10721699998.

The previous prime is 10721699977. The next prime is 10721700007. The reversal of 10721699999 is 99999612701.

It is a happy number.

10721699999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10721699999 - 2¹² = 10721695903 is a prime.

It is a super-2 number, since 2×10721699999² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10721699909) by changing a digit.

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 as a sum of consecutive naturals, namely, 5360849999 + 5360850000.

It is an arithmetic number, because the mean of its divisors is an integer number (5360850000).

Almost surely, 2^10721699999 is an apocalyptic number.

10721699999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10721699999 is an equidigital number, since it uses as much as digits as its factorization.

10721699999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4960116, while the sum is 62.

It can be divided in two parts, 1072 and 1699999, that added together give a palindrome (1701071).

The spelling of 10721699999 in words is "ten billion, seven hundred twenty-one million, six hundred ninety-nine thousand, nine hundred ninety-nine".