10643979604 has 6 divisors (see below), whose sum is σ = 18626964314. Its totient is φ = 5321989800.

The previous prime is 10643979557. The next prime is 10643979613. The reversal of 10643979604 is 40697934601.

It can be written as a sum of positive squares in only one way, i.e., 8291923600 + 2352056004 = 91060^2 + 48498^2 .

It is a super-2 number, since 2×10643979604² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330497447 + ... + 1330497454.

Almost surely, 2^10643979604 is an apocalyptic number.

It is an amenable number.

10643979604 is a deficient number, since it is larger than the sum of its proper divisors (7982984710).

10643979604 is a wasteful number, since it uses less digits than its factorization.

10643979604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660994905 (or 2660994903 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 10643979604 in words is "ten billion, six hundred forty-three million, nine hundred seventy-nine thousand, six hundred four".