161283289477 has 8 divisors (see below), whose sum is σ = 169827845600. Its totient is φ = 152744329584.

The previous prime is 161283289471. The next prime is 161283289483. The reversal of 161283289477 is 774982382161.

161283289477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161283289471) and next prime (161283289483).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161283289477 - 2²⁷ = 161149071749 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 (161283289471) 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 7 ways as a sum of consecutive naturals, for example, 1339827 + ... + 1455232.

It is an arithmetic number, because the mean of its divisors is an integer number (21228480700).

Almost surely, 2^161283289477 is an apocalyptic number.

It is an amenable number.

161283289477 is a deficient number, since it is larger than the sum of its proper divisors (8544556123).

161283289477 is a wasteful number, since it uses less digits than its factorization.

161283289477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798115.

The product of its digits is 8128512, while the sum is 58.

The spelling of 161283289477 in words is "one hundred sixty-one billion, two hundred eighty-three million, two hundred eighty-nine thousand, four hundred seventy-seven".