1669162857079 has 4 divisors (see below), whose sum is σ = 1675509484176. Its totient is φ = 1662816229984.

The previous prime is 1669162857073. The next prime is 1669162857107. The reversal of 1669162857079 is 9707582619661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1669162857079 - 2⁷ = 1669162856951 is a prime.

It is a super-2 number, since 2×1669162857079² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669162857073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3173313154 + ... + 3173313679.

It is an arithmetic number, because the mean of its divisors is an integer number (418877371044).

Almost surely, 2^{1669162857079} is an apocalyptic number.

1669162857079 is a deficient number, since it is larger than the sum of its proper divisors (6346627097).

1669162857079 is an equidigital number, since it uses as much as digits as its factorization.

1669162857079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6346627096.

The product of its (nonzero) digits is 68584320, while the sum is 67.

The spelling of 1669162857079 in words is "one trillion, six hundred sixty-nine billion, one hundred sixty-two million, eight hundred fifty-seven thousand, seventy-nine".