161112522405534 has 64 divisors (see below), whose sum is σ = 386368203804672. Its totient is φ = 43816958553600.

The previous prime is 161112522405533. The next prime is 161112522405577. The reversal of 161112522405534 is 435504225211161.

It is a super-4 number, since 4×161112522405534⁴ (a number of 58 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161112522405533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1014202027 + ... + 1014360870.

It is an arithmetic number, because the mean of its divisors is an integer number (6037003184448).

Almost surely, 2^{161112522405534} is an apocalyptic number.

161112522405534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161112522405534 is an abundant number, since it is smaller than the sum of its proper divisors (225255681399138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161112522405534 is a wasteful number, since it uses less digits than its factorization.

161112522405534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028563001.

The product of its (nonzero) digits is 288000, while the sum is 42.

Adding to 161112522405534 its reverse (435504225211161), we get a palindrome (596616747616695).

The spelling of 161112522405534 in words is "one hundred sixty-one trillion, one hundred twelve billion, five hundred twenty-two million, four hundred five thousand, five hundred thirty-four".