306245445062661 has 24 divisors (see below), whose sum is σ = 476383017659640. Its totient is φ = 188458255069056.

The previous prime is 306245445062657. The next prime is 306245445062699. The reversal of 306245445062661 is 166260544542603.

306245445062661 is a `hidden beast` number, since 3 + 0 + 6 + 2 + 4 + 5 + 4 + 4 + 5 + 0 + 626 + 6 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 73521450036225 + 232723995026436 = 8574465^2 + 15255294^2 .

It is not a de Polignac number, because 306245445062661 - 2² = 306245445062657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 306245445062598 and 306245445062607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306245445062651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45849355 + ... + 52102343.

It is an arithmetic number, because the mean of its divisors is an integer number (19849292402485).

Almost surely, 2^{306245445062661} is an apocalyptic number.

It is an amenable number.

306245445062661 is a deficient number, since it is larger than the sum of its proper divisors (170137572596979).

306245445062661 is a wasteful number, since it uses less digits than its factorization.

306245445062661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671605 (or 6671602 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 54.

The spelling of 306245445062661 in words is "three hundred six trillion, two hundred forty-five billion, four hundred forty-five million, sixty-two thousand, six hundred sixty-one".