7136728668 has 48 divisors (see below), whose sum is σ = 19140660000. Its totient is φ = 2296877184.

The previous prime is 7136728657. The next prime is 7136728679. The reversal of 7136728668 is 8668276317.

It is an interprime number because it is at equal distance from previous prime (7136728657) and next prime (7136728679).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1136193 + ... + 1142456.

It is an arithmetic number, because the mean of its divisors is an integer number (398763750).

Almost surely, 2^7136728668 is an apocalyptic number.

It is an amenable number.

7136728668 is an abundant number, since it is smaller than the sum of its proper divisors (12003931332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7136728668 is a wasteful number, since it uses less digits than its factorization.

7136728668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278691 (or 2278683 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 7136728668 is about 84479.1611464034. The cubic root of 7136728668 is about 1925.3058415952.

The spelling of 7136728668 in words is "seven billion, one hundred thirty-six million, seven hundred twenty-eight thousand, six hundred sixty-eight".