161752015687 has 2 divisors, whose sum is σ = 161752015688. Its totient is φ = 161752015686.

The previous prime is 161752015661. The next prime is 161752015697. The reversal of 161752015687 is 786510257161.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (786510257161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161752015687 - 2⁷ = 161752015559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161752015687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161752015697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80876007843 + 80876007844.

It is an arithmetic number, because the mean of its divisors is an integer number (80876007844).

Almost surely, 2^161752015687 is an apocalyptic number.

161752015687 is a deficient number, since it is larger than the sum of its proper divisors (1).

161752015687 is an equidigital number, since it uses as much as digits as its factorization.

161752015687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 49.

The spelling of 161752015687 in words is "one hundred sixty-one billion, seven hundred fifty-two million, fifteen thousand, six hundred eighty-seven".