6440105562 has 16 divisors (see below), whose sum is σ = 14051139552. Its totient is φ = 1951547120.

The previous prime is 6440105491. The next prime is 6440105579. The reversal of 6440105562 is 2655010446.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48788613 + ... + 48788744.

It is an arithmetic number, because the mean of its divisors is an integer number (878196222).

Almost surely, 2^6440105562 is an apocalyptic number.

6440105562 is an abundant number, since it is smaller than the sum of its proper divisors (7611033990).

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

6440105562 is a wasteful number, since it uses less digits than its factorization.

6440105562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97577373.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 6440105562 is about 80250.2682986169. The cubic root of 6440105562 is about 1860.5056591431.

The spelling of 6440105562 in words is "six billion, four hundred forty million, one hundred five thousand, five hundred sixty-two".