1667079939742 has 16 divisors (see below), whose sum is σ = 2889962016480. Its totient is φ = 706435158528.

The previous prime is 1667079939709. The next prime is 1667079939743. The reversal of 1667079939742 is 2479399707661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667079939743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668971443 + ... + 668973934.

It is an arithmetic number, because the mean of its divisors is an integer number (180622626030).

Almost surely, 2^{1667079939742} is an apocalyptic number.

1667079939742 is a deficient number, since it is larger than the sum of its proper divisors (1222882076738).

1667079939742 is a wasteful number, since it uses less digits than its factorization.

1667079939742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337945475.

The product of its (nonzero) digits is 216040608, while the sum is 70.

The spelling of 1667079939742 in words is "one trillion, six hundred sixty-seven billion, seventy-nine million, nine hundred thirty-nine thousand, seven hundred forty-two".