10001561679 has 6 divisors (see below), whose sum is σ = 14446700216. Its totient is φ = 6667707780.

The previous prime is 10001561629. The next prime is 10001561681. The reversal of 10001561679 is 97616510001.

It is a happy number.

It is not a de Polignac number, because 10001561679 - 2⁷ = 10001561551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001561629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555642307 + ... + 555642324.

Almost surely, 2^10001561679 is an apocalyptic number.

10001561679 is a deficient number, since it is larger than the sum of its proper divisors (4445138537).

10001561679 is a wasteful number, since it uses less digits than its factorization.

10001561679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111284637 (or 1111284634 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The spelling of 10001561679 in words is "ten billion, one million, five hundred sixty-one thousand, six hundred seventy-nine".