1664057528835 has 32 divisors (see below), whose sum is σ = 2874309775680. Its totient is φ = 817225279488.

The previous prime is 1664057528821. The next prime is 1664057528867. The reversal of 1664057528835 is 5388257504661.

It is not a de Polignac number, because 1664057528835 - 2⁵ = 1664057528803 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10352554 + ... + 10512063.

It is an arithmetic number, because the mean of its divisors is an integer number (89822180490).

Almost surely, 2^{1664057528835} is an apocalyptic number.

1664057528835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1664057528835 is a deficient number, since it is larger than the sum of its proper divisors (1210252246845).

1664057528835 is a wasteful number, since it uses less digits than its factorization.

1664057528835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20865047.

The product of its (nonzero) digits is 48384000, while the sum is 60.

The spelling of 1664057528835 in words is "one trillion, six hundred sixty-four billion, fifty-seven million, five hundred twenty-eight thousand, eight hundred thirty-five".