1401666679165 has 8 divisors (see below), whose sum is σ = 1682531136000. Its totient is φ = 1120979262672.

The previous prime is 1401666679163. The next prime is 1401666679169. The reversal of 1401666679165 is 5619766661041.

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

It is a cyclic number.

It is not a de Polignac number, because 1401666679165 - 2¹ = 1401666679163 is a prime.

It is a super-3 number, since 3×1401666679165³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401666679163) 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, 44242665 + ... + 44274334.

It is an arithmetic number, because the mean of its divisors is an integer number (210316392000).

Almost surely, 2^{1401666679165} is an apocalyptic number.

It is an amenable number.

1401666679165 is a deficient number, since it is larger than the sum of its proper divisors (280864456835).

1401666679165 is an equidigital number, since it uses as much as digits as its factorization.

1401666679165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88520171.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 1401666679165 in words is "one trillion, four hundred one billion, six hundred sixty-six million, six hundred seventy-nine thousand, one hundred sixty-five".