6669401506417 has 32 divisors (see below), whose sum is σ = 7456347505152. Its totient is φ = 5926673608704.

The previous prime is 6669401506399. The next prime is 6669401506433. The reversal of 6669401506417 is 7146051049666.

6669401506417 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6669401506417 - 2¹⁹ = 6669400982129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6669401506457) 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, 9315333 + ... + 10005709.

It is an arithmetic number, because the mean of its divisors is an integer number (233010859536).

Almost surely, 2^{6669401506417} is an apocalyptic number.

It is an amenable number.

6669401506417 is a deficient number, since it is larger than the sum of its proper divisors (786945998735).

6669401506417 is a wasteful number, since it uses less digits than its factorization.

6669401506417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690697.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 6669401506417 in words is "six trillion, six hundred sixty-nine billion, four hundred one million, five hundred six thousand, four hundred seventeen".