1661334176942 has 16 divisors (see below), whose sum is σ = 2739299105664. Its totient is φ = 749387379000.

The previous prime is 1661334176941. The next prime is 1661334176959. The reversal of 1661334176942 is 2496714331661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661334176941) 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, 288223034 + ... + 288228797.

It is an arithmetic number, because the mean of its divisors is an integer number (171206194104).

Almost surely, 2^{1661334176942} is an apocalyptic number.

1661334176942 is a deficient number, since it is larger than the sum of its proper divisors (1077964928722).

1661334176942 is a wasteful number, since it uses less digits than its factorization.

1661334176942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576451975.

The product of its digits is 3919104, while the sum is 53.

The spelling of 1661334176942 in words is "one trillion, six hundred sixty-one billion, three hundred thirty-four million, one hundred seventy-six thousand, nine hundred forty-two".