52705787487 has 4 divisors (see below), whose sum is σ = 70274383320. Its totient is φ = 35137191656.

The previous prime is 52705787423. The next prime is 52705787489. The reversal of 52705787487 is 78478750725.

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 52705787487 - 2⁶ = 52705787423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52705787487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52705787489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8784297912 + ... + 8784297917.

It is an arithmetic number, because the mean of its divisors is an integer number (17568595830).

Almost surely, 2^52705787487 is an apocalyptic number.

52705787487 is a deficient number, since it is larger than the sum of its proper divisors (17568595833).

52705787487 is a wasteful number, since it uses less digits than its factorization.

52705787487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17568595832.

The product of its (nonzero) digits is 30732800, while the sum is 60.

The spelling of 52705787487 in words is "fifty-two billion, seven hundred five million, seven hundred eighty-seven thousand, four hundred eighty-seven".