161362544497 has 24 divisors (see below), whose sum is σ = 209766225312. Its totient is φ = 122670273600.

The previous prime is 161362544437. The next prime is 161362544503. The reversal of 161362544497 is 794445263161.

161362544497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161362544497 - 2³⁵ = 127002806129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161362544417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3628803 + ... + 3673000.

It is an arithmetic number, because the mean of its divisors is an integer number (8740259388).

Almost surely, 2^161362544497 is an apocalyptic number.

It is an amenable number.

161362544497 is a deficient number, since it is larger than the sum of its proper divisors (48403680815).

161362544497 is a wasteful number, since it uses less digits than its factorization.

161362544497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7301869 (or 7301862 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The spelling of 161362544497 in words is "one hundred sixty-one billion, three hundred sixty-two million, five hundred forty-four thousand, four hundred ninety-seven".