1006644561164 has 48 divisors (see below), whose sum is σ = 1927480816800. Its totient is φ = 456208512000.

The previous prime is 1006644561161. The next prime is 1006644561173. The reversal of 1006644561164 is 4611654466001.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (1006644561161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40727642 + ... + 40752350.

It is an arithmetic number, because the mean of its divisors is an integer number (40155850350).

Almost surely, 2^{1006644561164} is an apocalyptic number.

It is an amenable number.

1006644561164 is a deficient number, since it is larger than the sum of its proper divisors (920836255636).

1006644561164 is a wasteful number, since it uses less digits than its factorization.

1006644561164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27434 (or 27432 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 1006644561164 in words is "one trillion, six billion, six hundred forty-four million, five hundred sixty-one thousand, one hundred sixty-four".