6661251450306 has 40 divisors (see below), whose sum is σ = 14934923374800. Its totient is φ = 2219110161912.

The previous prime is 6661251450299. The next prime is 6661251450311. The reversal of 6661251450306 is 6030541521666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11825656 + ... + 12376131.

It is an arithmetic number, because the mean of its divisors is an integer number (373373084370).

Almost surely, 2^{6661251450306} is an apocalyptic number.

6661251450306 is an abundant number, since it is smaller than the sum of its proper divisors (8273671924494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6661251450306 is a wasteful number, since it uses less digits than its factorization.

6661251450306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24203500 (or 24203491 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 6661251450306 in words is "six trillion, six hundred sixty-one billion, two hundred fifty-one million, four hundred fifty thousand, three hundred six".