306424066650021 has 12 divisors (see below), whose sum is σ = 456890364611200. Its totient is φ = 197692946225640.

The previous prime is 306424066650001. The next prime is 306424066650061. The reversal of 306424066650021 is 120056660424603.

It is a happy number.

It is not a de Polignac number, because 306424066650021 - 2⁵ = 306424066649989 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 (306424066650001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 549147072571 + ... + 549147073128.

Almost surely, 2^{306424066650021} is an apocalyptic number.

306424066650021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

306424066650021 is a deficient number, since it is larger than the sum of its proper divisors (150466297961179).

306424066650021 is a wasteful number, since it uses less digits than its factorization.

306424066650021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098294145736 (or 1098294145733 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 306424066650021 in words is "three hundred six trillion, four hundred twenty-four billion, sixty-six million, six hundred fifty thousand, twenty-one".