5145615668 has 12 divisors (see below), whose sum is σ = 9033784032. Its totient is φ = 2564534520.

The previous prime is 5145615649. The next prime is 5145615689. The reversal of 5145615668 is 8665165415.

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, 2066930 + ... + 2069417.

It is an arithmetic number, because the mean of its divisors is an integer number (752815336).

Almost surely, 2^5145615668 is an apocalyptic number.

It is an amenable number.

5145615668 is a deficient number, since it is larger than the sum of its proper divisors (3888168364).

5145615668 is a wasteful number, since it uses less digits than its factorization.

5145615668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136662 (or 4136660 counting only the distinct ones).

The product of its digits is 864000, while the sum is 47.

The square root of 5145615668 is about 71732.9468793803. The cubic root of 5145615668 is about 1726.4173095050.

It can be divided in two parts, 51456 and 15668, that multiplied together give a palindrome (806212608).

The spelling of 5145615668 in words is "five billion, one hundred forty-five million, six hundred fifteen thousand, six hundred sixty-eight".