1664501400131 has 8 divisors (see below), whose sum is σ = 1754373384720. Its totient is φ = 1574856080352.

The previous prime is 1664501400103. The next prime is 1664501400137. The reversal of 1664501400131 is 1310041054661.

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 1664501400131 - 2¹⁴ = 1664501383747 is a prime.

It is a super-2 number, since 2×1664501400131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1664501400137) 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, 56651120 + ... + 56680493.

It is an arithmetic number, because the mean of its divisors is an integer number (219296673090).

Almost surely, 2^{1664501400131} is an apocalyptic number.

1664501400131 is a deficient number, since it is larger than the sum of its proper divisors (89871984589).

1664501400131 is a wasteful number, since it uses less digits than its factorization.

1664501400131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113332405.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 1664501400131 its reverse (1310041054661), we get a palindrome (2974542454792).

The spelling of 1664501400131 in words is "one trillion, six hundred sixty-four billion, five hundred one million, four hundred thousand, one hundred thirty-one".