10005011656 has 8 divisors (see below), whose sum is σ = 18759396870. Its totient is φ = 5002505824.

The previous prime is 10005011591. The next prime is 10005011657. The reversal of 10005011656 is 65611050001.

It can be written as a sum of positive squares in only one way, i.e., 9768159556 + 236852100 = 98834^2 + 15390^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 10005011656.

It is not an unprimeable number, because it can be changed into a prime (10005011657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625313221 + ... + 625313236.

Almost surely, 2^10005011656 is an apocalyptic number.

It is an amenable number.

10005011656 is a deficient number, since it is larger than the sum of its proper divisors (8754385214).

10005011656 is a wasteful number, since it uses less digits than its factorization.

10005011656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250626463 (or 1250626459 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 10005011656 its reverse (65611050001), we get a palindrome (75616061657).

The spelling of 10005011656 in words is "ten billion, five million, eleven thousand, six hundred fifty-six".