10949757721 has 16 divisors (see below), whose sum is σ = 12926844928. Its totient is φ = 9076309200.

The previous prime is 10949757697. The next prime is 10949757727. The reversal of 10949757721 is 12775794901.

It is a happy number.

It is not a de Polignac number, because 10949757721 - 2⁷ = 10949757593 is a prime.

It is a super-2 number, since 2×10949757721² (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 (10949757727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302056 + ... + 336358.

It is an arithmetic number, because the mean of its divisors is an integer number (807927808).

Almost surely, 2^10949757721 is an apocalyptic number.

It is an amenable number.

10949757721 is a deficient number, since it is larger than the sum of its proper divisors (1977087207).

10949757721 is a wasteful number, since it uses less digits than its factorization.

10949757721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35812.

The product of its (nonzero) digits is 1111320, while the sum is 52.

The spelling of 10949757721 in words is "ten billion, nine hundred forty-nine million, seven hundred fifty-seven thousand, seven hundred twenty-one".