1667730878101 has 8 divisors (see below), whose sum is σ = 1671214114944. Its totient is φ = 1664247882960.

The previous prime is 1667730878053. The next prime is 1667730878113. The reversal of 1667730878101 is 1018780377661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1667730878101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667730878131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22429656 + ... + 22503886.

It is an arithmetic number, because the mean of its divisors is an integer number (208901764368).

Almost surely, 2^{1667730878101} is an apocalyptic number.

It is an amenable number.

1667730878101 is a deficient number, since it is larger than the sum of its proper divisors (3483236843).

1667730878101 is an equidigital number, since it uses as much as digits as its factorization.

1667730878101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120851.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 1667730878101 in words is "one trillion, six hundred sixty-seven billion, seven hundred thirty million, eight hundred seventy-eight thousand, one hundred one".