1664251313101 has 8 divisors (see below), whose sum is σ = 1795058011040. Its totient is φ = 1533842810352.

The previous prime is 1664251313093. The next prime is 1664251313113. The reversal of 1664251313101 is 1013131524661.

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

It is a cyclic number.

It is not a de Polignac number, because 1664251313101 - 2³ = 1664251313093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664251313141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99540111 + ... + 99556828.

It is an arithmetic number, because the mean of its divisors is an integer number (224382251380).

Almost surely, 2^{1664251313101} is an apocalyptic number.

It is an amenable number.

1664251313101 is a deficient number, since it is larger than the sum of its proper divisors (130806697939).

1664251313101 is a wasteful number, since it uses less digits than its factorization.

1664251313101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199097595.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 1664251313101 its reverse (1013131524661), we get a palindrome (2677382837762).

The spelling of 1664251313101 in words is "one trillion, six hundred sixty-four billion, two hundred fifty-one million, three hundred thirteen thousand, one hundred one".