10662421256 has 8 divisors (see below), whose sum is σ = 19992039870. Its totient is φ = 5331210624.

The previous prime is 10662421223. The next prime is 10662421261. The reversal of 10662421256 is 65212426601.

It can be written as a sum of positive squares in only one way, i.e., 7717622500 + 2944798756 = 87850^2 + 54266^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×10662421256² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666401321 + ... + 666401336.

Almost surely, 2^10662421256 is an apocalyptic number.

It is an amenable number.

10662421256 is a deficient number, since it is larger than the sum of its proper divisors (9329618614).

10662421256 is a wasteful number, since it uses less digits than its factorization.

10662421256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332802663 (or 1332802659 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 10662421256 its reverse (65212426601), we get a palindrome (75874847857).

The spelling of 10662421256 in words is "ten billion, six hundred sixty-two million, four hundred twenty-one thousand, two hundred fifty-six".