1664044463642 has 8 divisors (see below), whose sum is σ = 2722981849632. Its totient is φ = 756383847100.

The previous prime is 1664044463461. The next prime is 1664044463663. The reversal of 1664044463642 is 2463644404661.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37819192334 + ... + 37819192377.

It is an arithmetic number, because the mean of its divisors is an integer number (340372731204).

Almost surely, 2^{1664044463642} is an apocalyptic number.

1664044463642 is a deficient number, since it is larger than the sum of its proper divisors (1058937385990).

1664044463642 is a wasteful number, since it uses less digits than its factorization.

1664044463642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75638384724.

The product of its (nonzero) digits is 7962624, while the sum is 50.

The spelling of 1664044463642 in words is "one trillion, six hundred sixty-four billion, forty-four million, four hundred sixty-three thousand, six hundred forty-two".