161426634541 has 16 divisors (see below), whose sum is σ = 164128688640. Its totient is φ = 158737138560.

The previous prime is 161426634539. The next prime is 161426634547. The reversal of 161426634541 is 145436624161.

It is a cyclic number.

It is not a de Polignac number, because 161426634541 - 2¹ = 161426634539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161426634547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55149420 + ... + 55152346.

It is an arithmetic number, because the mean of its divisors is an integer number (10258043040).

Almost surely, 2^161426634541 is an apocalyptic number.

It is an amenable number.

161426634541 is a deficient number, since it is larger than the sum of its proper divisors (2702054099).

161426634541 is an equidigital number, since it uses as much as digits as its factorization.

161426634541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764.

The product of its digits is 414720, while the sum is 43.

The spelling of 161426634541 in words is "one hundred sixty-one billion, four hundred twenty-six million, six hundred thirty-four thousand, five hundred forty-one".