2078677161 has 28 divisors (see below), whose sum is σ = 3399929520. Its totient is φ = 1259799480.

The previous prime is 2078677067. The next prime is 2078677169. The reversal of 2078677161 is 1617768702.

It is not a de Polignac number, because 2078677161 - 2²³ = 2070288553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2078677169) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 121591 + ... + 137628.

Almost surely, 2^2078677161 is an apocalyptic number.

It is an amenable number.

2078677161 is a deficient number, since it is larger than the sum of its proper divisors (1321252359).

2078677161 is an equidigital number, since it uses as much as digits as its factorization.

2078677161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259248 (or 259233 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 2078677161 is about 45592.5121154779. The cubic root of 2078677161 is about 1276.2301925892.

The spelling of 2078677161 in words is "two billion, seventy-eight million, six hundred seventy-seven thousand, one hundred sixty-one".