161752015678 has 48 divisors (see below), whose sum is σ = 270288039168. Its totient is φ = 72534330000.

The previous prime is 161752015661. The next prime is 161752015687. The reversal of 161752015678 is 876510257161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15079225 + ... + 15089947.

It is an arithmetic number, because the mean of its divisors is an integer number (5631000816).

Almost surely, 2^161752015678 is an apocalyptic number.

161752015678 is a deficient number, since it is larger than the sum of its proper divisors (108536023490).

161752015678 is a wasteful number, since it uses less digits than its factorization.

161752015678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11581 (or 11570 counting only the distinct ones).

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

The spelling of 161752015678 in words is "one hundred sixty-one billion, seven hundred fifty-two million, fifteen thousand, six hundred seventy-eight".