68530252387 has 4 divisors (see below), whose sum is σ = 68618908080. Its totient is φ = 68441596696.

The previous prime is 68530252367. The next prime is 68530252397. The reversal of 68530252387 is 78325203586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68530252387 - 2¹⁵ = 68530219619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68530252387.

It is not an unprimeable number, because it can be changed into a prime (68530252327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44326687 + ... + 44328232.

It is an arithmetic number, because the mean of its divisors is an integer number (17154727020).

Almost surely, 2^68530252387 is an apocalyptic number.

68530252387 is a deficient number, since it is larger than the sum of its proper divisors (88655693).

68530252387 is an equidigital number, since it uses as much as digits as its factorization.

68530252387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88655692.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 68530252387 in words is "sixty-eight billion, five hundred thirty million, two hundred fifty-two thousand, three hundred eighty-seven".