161606000010531 has 8 divisors (see below), whose sum is σ = 215727274734160. Its totient is φ = 107611029313632.

The previous prime is 161606000010509. The next prime is 161606000010569. The reversal of 161606000010531 is 135010000606161.

161606000010531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161606000010531 - 2²⁹ = 161605463139619 is a prime.

It is a super-2 number, since 2×161606000010531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161606000010131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31576003696 + ... + 31576008813.

It is an arithmetic number, because the mean of its divisors is an integer number (26965909341770).

Almost surely, 2^{161606000010531} is an apocalyptic number.

161606000010531 is a deficient number, since it is larger than the sum of its proper divisors (54121274723629).

161606000010531 is an equidigital number, since it uses as much as digits as its factorization.

161606000010531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63152013365.

The product of its (nonzero) digits is 3240, while the sum is 30.

Adding to 161606000010531 its reverse (135010000606161), we get a palindrome (296616000616692).

The spelling of 161606000010531 in words is "one hundred sixty-one trillion, six hundred six billion, ten thousand, five hundred thirty-one".