161252610387 has 32 divisors (see below), whose sum is σ = 237395681280. Its totient is φ = 96544800000.

The previous prime is 161252610371. The next prime is 161252610413. The reversal of 161252610387 is 783016252161.

It is a happy number.

161252610387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161252610387 - 2⁴ = 161252610371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161252610307) 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 31 ways as a sum of consecutive naturals, for example, 3356637 + ... + 3404337.

It is an arithmetic number, because the mean of its divisors is an integer number (7418615040).

Almost surely, 2^161252610387 is an apocalyptic number.

161252610387 is a deficient number, since it is larger than the sum of its proper divisors (76143070893).

161252610387 is a wasteful number, since it uses less digits than its factorization.

161252610387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48955.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 161252610387 in words is "one hundred sixty-one billion, two hundred fifty-two million, six hundred ten thousand, three hundred eighty-seven".