1665160663403 has 16 divisors (see below), whose sum is σ = 1769819710464. Its totient is φ = 1561248328320.

The previous prime is 1665160663393. The next prime is 1665160663417. The reversal of 1665160663403 is 3043660615661.

It is not a de Polignac number, because 1665160663403 - 2⁸ = 1665160663147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1665160863403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57789626 + ... + 57818432.

It is an arithmetic number, because the mean of its divisors is an integer number (110613731904).

Almost surely, 2^{1665160663403} is an apocalyptic number.

1665160663403 is a deficient number, since it is larger than the sum of its proper divisors (104659047061).

1665160663403 is a wasteful number, since it uses less digits than its factorization.

1665160663403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41642.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 1665160663403 in words is "one trillion, six hundred sixty-five billion, one hundred sixty million, six hundred sixty-three thousand, four hundred three".