10985949776721 has 64 divisors (see below), whose sum is σ = 15351765166080. Its totient is φ = 6981984552960.

The previous prime is 10985949776717. The next prime is 10985949776729. The reversal of 10985949776721 is 12767794958901.

It is not a de Polignac number, because 10985949776721 - 2² = 10985949776717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10985949776729) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 437482956 + ... + 437508066.

It is an arithmetic number, because the mean of its divisors is an integer number (239871330720).

Almost surely, 2^{10985949776721} is an apocalyptic number.

It is an amenable number.

10985949776721 is a deficient number, since it is larger than the sum of its proper divisors (4365815389359).

10985949776721 is a wasteful number, since it uses less digits than its factorization.

10985949776721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25654.

The product of its (nonzero) digits is 480090240, while the sum is 75.

The spelling of 10985949776721 in words is "ten trillion, nine hundred eighty-five billion, nine hundred forty-nine million, seven hundred seventy-six thousand, seven hundred twenty-one".