161426775 has 12 divisors (see below), whose sum is σ = 266892392. Its totient is φ = 86094240.

The previous prime is 161426767. The next prime is 161426813. The reversal of 161426775 is 577624161.

It is not a de Polignac number, because 161426775 - 2³ = 161426767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1076104 + ... + 1076253.

Almost surely, 2^161426775 is an apocalyptic number.

161426775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161426775 is a deficient number, since it is larger than the sum of its proper divisors (105465617).

161426775 is a wasteful number, since it uses less digits than its factorization.

161426775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152370 (or 2152365 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 161426775 is about 12705.3837014078. The cubic root of 161426775 is about 544.4924433210.

The spelling of 161426775 in words is "one hundred sixty-one million, four hundred twenty-six thousand, seven hundred seventy-five".