5145281668 has 12 divisors (see below), whose sum is σ = 9294702592. Its totient is φ = 2489652360.

The previous prime is 5145281641. The next prime is 5145281689. The reversal of 5145281668 is 8661825415.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20746980 + ... + 20747227.

Almost surely, 2^5145281668 is an apocalyptic number.

It is an amenable number.

5145281668 is a deficient number, since it is larger than the sum of its proper divisors (4149420924).

5145281668 is a wasteful number, since it uses less digits than its factorization.

5145281668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41494242 (or 41494240 counting only the distinct ones).

The product of its digits is 460800, while the sum is 46.

The square root of 5145281668 is about 71730.6187621437. The cubic root of 5145281668 is about 1726.3799549949.

The spelling of 5145281668 in words is "five billion, one hundred forty-five million, two hundred eighty-one thousand, six hundred sixty-eight".