161455277894 has 32 divisors (see below), whose sum is σ = 250052832000. Its totient is φ = 78148854784.

The previous prime is 161455277833. The next prime is 161455277911. The reversal of 161455277894 is 498772554161.

It is a happy number.

161455277894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4501022 + ... + 4536750.

It is an arithmetic number, because the mean of its divisors is an integer number (7814151000).

Almost surely, 2^161455277894 is an apocalyptic number.

161455277894 is a deficient number, since it is larger than the sum of its proper divisors (88597554106).

161455277894 is a wasteful number, since it uses less digits than its factorization.

161455277894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36352.

The product of its digits is 16934400, while the sum is 59.

The spelling of 161455277894 in words is "one hundred sixty-one billion, four hundred fifty-five million, two hundred seventy-seven thousand, eight hundred ninety-four".