10643254412565 has 32 divisors (see below), whose sum is σ = 17119186672896. Its totient is φ = 5646421061120.

The previous prime is 10643254412543. The next prime is 10643254412641. The reversal of 10643254412565 is 56521445234601.

It is not a de Polignac number, because 10643254412565 - 2⁷ = 10643254412437 is a prime.

It is a super-2 number, since 2×10643254412565² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 14024089 + ... + 14763521.

It is an arithmetic number, because the mean of its divisors is an integer number (534974583528).

Almost surely, 2^{10643254412565} is an apocalyptic number.

10643254412565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10643254412565 is a deficient number, since it is larger than the sum of its proper divisors (6475932260331).

10643254412565 is a wasteful number, since it uses less digits than its factorization.

10643254412565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744509.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 10643254412565 in words is "ten trillion, six hundred forty-three billion, two hundred fifty-four million, four hundred twelve thousand, five hundred sixty-five".