6445665111102 has 64 divisors (see below), whose sum is σ = 14910825475584. Its totient is φ = 1819511447040.

The previous prime is 6445665111091. The next prime is 6445665111107. The reversal of 6445665111102 is 2011115665446.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445665111107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1440423 + ... + 3868610.

It is an arithmetic number, because the mean of its divisors is an integer number (232981648056).

Almost surely, 2^{6445665111102} is an apocalyptic number.

6445665111102 is an abundant number, since it is smaller than the sum of its proper divisors (8465160364482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6445665111102 is a wasteful number, since it uses less digits than its factorization.

6445665111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309393.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 6445665111102 in words is "six trillion, four hundred forty-five billion, six hundred sixty-five million, one hundred eleven thousand, one hundred two".