56668337187406 has 20 divisors (see below), whose sum is σ = 99163689593112. Its totient is φ = 24286430221116.

The previous prime is 56668337187379. The next prime is 56668337187409. The reversal of 56668337187406 is 60478173386665.

It is a super-2 number, since 2×56668337187406² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56668337187409) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5900488450 + ... + 5900498053.

Almost surely, 2^{56668337187406} is an apocalyptic number.

56668337187406 is a deficient number, since it is larger than the sum of its proper divisors (42495352405706).

56668337187406 is an equidigital number, since it uses as much as digits as its factorization.

56668337187406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11800986533 (or 11800986512 counting only the distinct ones).

The product of its (nonzero) digits is 731566080, while the sum is 70.

The spelling of 56668337187406 in words is "fifty-six trillion, six hundred sixty-eight billion, three hundred thirty-seven million, one hundred eighty-seven thousand, four hundred six".