10663544538065 has 16 divisors (see below), whose sum is σ = 12817971094656. Its totient is φ = 8516366956800.

The previous prime is 10663544538029. The next prime is 10663544538067. The reversal of 10663544538065 is 56083544536601.

It is not a de Polignac number, because 10663544538065 - 2⁸ = 10663544537809 is a prime.

It is a super-2 number, since 2×10663544538065² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10663544538065.

It is not an unprimeable number, because it can be changed into a prime (10663544538067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8154404 + ... + 9371306.

It is an arithmetic number, because the mean of its divisors is an integer number (801123193416).

Almost surely, 2^{10663544538065} is an apocalyptic number.

It is an amenable number.

10663544538065 is a deficient number, since it is larger than the sum of its proper divisors (2154426556591).

10663544538065 is a wasteful number, since it uses less digits than its factorization.

10663544538065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219880.

The product of its (nonzero) digits is 31104000, while the sum is 56.

The spelling of 10663544538065 in words is "ten trillion, six hundred sixty-three billion, five hundred forty-four million, five hundred thirty-eight thousand, sixty-five".