652078165687 has 4 divisors (see below), whose sum is σ = 702238024600. Its totient is φ = 601918306776.

The previous prime is 652078165657. The next prime is 652078165699. The reversal of 652078165687 is 786561870256.

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 652078165687 - 2¹⁹ = 652077641399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652078165657) 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, 25079929437 + ... + 25079929462.

It is an arithmetic number, because the mean of its divisors is an integer number (175559506150).

Almost surely, 2^652078165687 is an apocalyptic number.

652078165687 is a deficient number, since it is larger than the sum of its proper divisors (50159858913).

652078165687 is a wasteful number, since it uses less digits than its factorization.

652078165687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50159858912.

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 652078165687 in words is "six hundred fifty-two billion, seventy-eight million, one hundred sixty-five thousand, six hundred eighty-seven".