10643311235566 has 8 divisors (see below), whose sum is σ = 16031765878560. Its totient is φ = 5299389276048.

The previous prime is 10643311235561. The next prime is 10643311235573. The reversal of 10643311235566 is 66553211334601.

It is a happy number.

10643311235566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×10643311235566² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10643311235561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11133170271 + ... + 11133171226.

It is an arithmetic number, because the mean of its divisors is an integer number (2003970734820).

Almost surely, 2^{10643311235566} is an apocalyptic number.

10643311235566 is a deficient number, since it is larger than the sum of its proper divisors (5388454642994).

10643311235566 is a wasteful number, since it uses less digits than its factorization.

10643311235566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22266341738.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 10643311235566 in words is "ten trillion, six hundred forty-three billion, three hundred eleven million, two hundred thirty-five thousand, five hundred sixty-six".