10643265112665 has 32 divisors (see below), whose sum is σ = 18025641676800. Its totient is φ = 5347606979520.

The previous prime is 10643265112643. The next prime is 10643265112757. The reversal of 10643265112665 is 56621156234601.

It is a happy number.

It is not a de Polignac number, because 10643265112665 - 2⁷ = 10643265112537 is a prime.

It is a super-2 number, since 2×10643265112665² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104264041 + ... + 104366070.

It is an arithmetic number, because the mean of its divisors is an integer number (563301302400).

Almost surely, 2^{10643265112665} is an apocalyptic number.

10643265112665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10643265112665 is a deficient number, since it is larger than the sum of its proper divisors (7382376564135).

10643265112665 is a wasteful number, since it uses less digits than its factorization.

10643265112665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208630317.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 10643265112665 in words is "ten trillion, six hundred forty-three billion, two hundred sixty-five million, one hundred twelve thousand, six hundred sixty-five".