1667404016667 has 32 divisors (see below), whose sum is σ = 2481126336000. Its totient is φ = 1106704231200.

The previous prime is 1667404016659. The next prime is 1667404016693. The reversal of 1667404016667 is 7666104047661.

It is not a de Polignac number, because 1667404016667 - 2³ = 1667404016659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1667404016647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10518042 + ... + 10675392.

It is an arithmetic number, because the mean of its divisors is an integer number (77535198000).

Almost surely, 2^{1667404016667} is an apocalyptic number.

1667404016667 is a deficient number, since it is larger than the sum of its proper divisors (813722319333).

1667404016667 is a wasteful number, since it uses less digits than its factorization.

1667404016667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159088 (or 159082 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 1667404016667 in words is "one trillion, six hundred sixty-seven billion, four hundred four million, sixteen thousand, six hundred sixty-seven".