10638763881 has 16 divisors (see below), whose sum is σ = 14271985728. Its totient is φ = 7049073600.

The previous prime is 10638763871. The next prime is 10638763901. The reversal of 10638763881 is 18836783601.

It is not a de Polignac number, because 10638763881 - 2³⁰ = 9565022057 is a prime.

It is a super-2 number, since 2×10638763881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10638763831) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1079466 + ... + 1089276.

It is an arithmetic number, because the mean of its divisors is an integer number (891999108).

Almost surely, 2^10638763881 is an apocalyptic number.

It is an amenable number.

10638763881 is a deficient number, since it is larger than the sum of its proper divisors (3633221847).

10638763881 is a wasteful number, since it uses less digits than its factorization.

10638763881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11992.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 10638763881 in words is "ten billion, six hundred thirty-eight million, seven hundred sixty-three thousand, eight hundred eighty-one".