1668267412407 has 16 divisors (see below), whose sum is σ = 2471537184480. Its totient is φ = 1112164816896.

The previous prime is 1668267412397. The next prime is 1668267412421. The reversal of 1668267412407 is 7042147628661.

1668267412407 is a `hidden beast` number, since 1 + 66 + 82 + 67 + 41 + 2 + 407 = 666.

It is not a de Polignac number, because 1668267412407 - 2³² = 1663972445111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668267412447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2228023 + ... + 2881079.

It is an arithmetic number, because the mean of its divisors is an integer number (154471074030).

Almost surely, 2^{1668267412407} is an apocalyptic number.

1668267412407 is a deficient number, since it is larger than the sum of its proper divisors (803269772073).

1668267412407 is an equidigital number, since it uses as much as digits as its factorization.

1668267412407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747679 (or 747673 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 1668267412407 in words is "one trillion, six hundred sixty-eight billion, two hundred sixty-seven million, four hundred twelve thousand, four hundred seven".