251300206066 has 128 divisors (see below), whose sum is σ = 484009344000. Its totient is φ = 97202327040.

The previous prime is 251300206061. The next prime is 251300206123. The reversal of 251300206066 is 660602003152.

251300206066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (251300206061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 169682046 + ... + 169683526.

It is an arithmetic number, because the mean of its divisors is an integer number (3781323000).

Almost surely, 2^251300206066 is an apocalyptic number.

251300206066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

251300206066 is a deficient number, since it is larger than the sum of its proper divisors (232709137934).

251300206066 is a wasteful number, since it uses less digits than its factorization.

251300206066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929 (or 1915 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 251300206066 in words is "two hundred fifty-one billion, three hundred million, two hundred six thousand, sixty-six".