161274126041 has 4 divisors (see below), whose sum is σ = 184313286912. Its totient is φ = 138234965172.

The previous prime is 161274125993. The next prime is 161274126059. The reversal of 161274126041 is 140621472161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161274126041 - 2²² = 161269931737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 161274125992 and 161274126010.

It is not an unprimeable number, because it can be changed into a prime (161274122041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11519580425 + ... + 11519580438.

It is an arithmetic number, because the mean of its divisors is an integer number (46078321728).

Almost surely, 2^161274126041 is an apocalyptic number.

It is an amenable number.

161274126041 is a deficient number, since it is larger than the sum of its proper divisors (23039160871).

161274126041 is an equidigital number, since it uses as much as digits as its factorization.

161274126041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23039160870.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 161274126041 in words is "one hundred sixty-one billion, two hundred seventy-four million, one hundred twenty-six thousand, forty-one".