219648079161 has 40 divisors (see below), whose sum is σ = 394726354880. Its totient is φ = 118907224992.

The previous prime is 219648079099. The next prime is 219648079177. The reversal of 219648079161 is 161970846912.

219648079161 is a `hidden beast` number, since 2 + 1 + 96 + 480 + 79 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 219648079161 - 2¹⁵ = 219648046393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 219648079098 and 219648079107.

It is not an unprimeable number, because it can be changed into a prime (219648079961) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10183606 + ... + 10205151.

It is an arithmetic number, because the mean of its divisors is an integer number (9868158872).

Almost surely, 2^219648079161 is an apocalyptic number.

219648079161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

219648079161 is a deficient number, since it is larger than the sum of its proper divisors (175078275719).

219648079161 is a wasteful number, since it uses less digits than its factorization.

219648079161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20388795 (or 20388786 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 219648079161 in words is "two hundred nineteen billion, six hundred forty-eight million, seventy-nine thousand, one hundred sixty-one".