1664026496532 has 18 divisors (see below), whose sum is σ = 4206289199658. Its totient is φ = 554675498832.

The previous prime is 1664026496527. The next prime is 1664026496611. The reversal of 1664026496532 is 2356946204661.

1664026496532 is a `hidden beast` number, since 1 + 6 + 6 + 40 + 2 + 64 + 9 + 6 + 532 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1265166041616 + 398860454916 = 1124796^2 + 631554^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23111479083 + ... + 23111479154.

Almost surely, 2^{1664026496532} is an apocalyptic number.

1664026496532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1664026496532 is an abundant number, since it is smaller than the sum of its proper divisors (2542262703126).

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

1664026496532 is a wasteful number, since it uses less digits than its factorization.

1664026496532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46222958247 (or 46222958242 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 54.

The spelling of 1664026496532 in words is "one trillion, six hundred sixty-four billion, twenty-six million, four hundred ninety-six thousand, five hundred thirty-two".