5145455668 has 12 divisors (see below), whose sum is σ = 9006487812. Its totient is φ = 2572173440.

The previous prime is 5145455659. The next prime is 5145455699. The reversal of 5145455668 is 8665545415.

It can be written as a sum of positive squares in 2 ways, for example, as 3750582564 + 1394873104 = 61242^2 + 37348^2 .

It is a congruent number.

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, 117355 + ... + 155122.

It is an arithmetic number, because the mean of its divisors is an integer number (750540651).

Almost surely, 2^5145455668 is an apocalyptic number.

It is an amenable number.

5145455668 is a deficient number, since it is larger than the sum of its proper divisors (3861032144).

5145455668 is a wasteful number, since it uses less digits than its factorization.

5145455668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277202 (or 277200 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 49.

The square root of 5145455668 is about 71731.8316230668. The cubic root of 5145455668 is about 1726.3994153306.

The spelling of 5145455668 in words is "five billion, one hundred forty-five million, four hundred fifty-five thousand, six hundred sixty-eight".