161604031929753 has 64 divisors (see below), whose sum is σ = 248822869800960. Its totient is φ = 91386850060800.

The previous prime is 161604031929733. The next prime is 161604031929803. The reversal of 161604031929753 is 357929130406161.

It is not a de Polignac number, because 161604031929753 - 2¹⁶ = 161604031864217 is a prime.

It is a super-2 number, since 2×161604031929753² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161604031929693 and 161604031929702.

It is not an unprimeable number, because it can be changed into a prime (161604031929733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11153559733 + ... + 11153574221.

It is an arithmetic number, because the mean of its divisors is an integer number (3887857340640).

Almost surely, 2^{161604031929753} is an apocalyptic number.

It is an amenable number.

161604031929753 is a deficient number, since it is larger than the sum of its proper divisors (87218837871207).

161604031929753 is a wasteful number, since it uses less digits than its factorization.

161604031929753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28798.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 161604031929753 in words is "one hundred sixty-one trillion, six hundred four billion, thirty-one million, nine hundred twenty-nine thousand, seven hundred fifty-three".