161308440756427 has 16 divisors (see below), whose sum is σ = 170373035381760. Its totient is φ = 152517629052000.

The previous prime is 161308440756409. The next prime is 161308440756467. The reversal of 161308440756427 is 724657044803161.

It is a cyclic number.

It is not a de Polignac number, because 161308440756427 - 2²⁷ = 161308306538699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161308440756467) 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, 270238324 + ... + 270834577.

It is an arithmetic number, because the mean of its divisors is an integer number (10648314711360).

Almost surely, 2^{161308440756427} is an apocalyptic number.

161308440756427 is a deficient number, since it is larger than the sum of its proper divisors (9064594625333).

161308440756427 is a wasteful number, since it uses less digits than its factorization.

161308440756427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541073154.

The product of its (nonzero) digits is 27095040, while the sum is 58.

The spelling of 161308440756427 in words is "one hundred sixty-one trillion, three hundred eight billion, four hundred forty million, seven hundred fifty-six thousand, four hundred twenty-seven".