66302313250 has 32 divisors (see below), whose sum is σ = 124469704944. Its totient is φ = 26445760000.

The previous prime is 66302313211. The next prime is 66302313251. The reversal of 66302313250 is 5231320366.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1571250321 + 64731062929 = 39639^2 + 254423^2 .

It is a super-2 number, since 2×66302313250² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66302313251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287401 + ... + 463900.

Almost surely, 2^66302313250 is an apocalyptic number.

66302313250 is a deficient number, since it is larger than the sum of its proper divisors (58167391694).

66302313250 is a wasteful number, since it uses less digits than its factorization.

66302313250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751671 (or 751661 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The spelling of 66302313250 in words is "sixty-six billion, three hundred two million, three hundred thirteen thousand, two hundred fifty".