161235171358 has 32 divisors (see below), whose sum is σ = 251546198400. Its totient is φ = 77443063200.

The previous prime is 161235171347. The next prime is 161235171431. The reversal of 161235171358 is 853171532161.

161235171358 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10427533 + ... + 10442983.

It is an arithmetic number, because the mean of its divisors is an integer number (7860818700).

Almost surely, 2^161235171358 is an apocalyptic number.

161235171358 is a deficient number, since it is larger than the sum of its proper divisors (90311027042).

161235171358 is a wasteful number, since it uses less digits than its factorization.

161235171358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17272.

The product of its digits is 151200, while the sum is 43.

The spelling of 161235171358 in words is "one hundred sixty-one billion, two hundred thirty-five million, one hundred seventy-one thousand, three hundred fifty-eight".