2071478881 has 4 divisors (see below), whose sum is σ = 2084673172. Its totient is φ = 2058284592.

The previous prime is 2071478873. The next prime is 2071478887. The reversal of 2071478881 is 1888741702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 887086656 + 1184392225 = 29784^2 + 34415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2071478881 - 2³ = 2071478873 is a prime.

It is a super-2 number, since 2×2071478881² = 8582049508858024322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2071478887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6596910 + ... + 6597223.

It is an arithmetic number, because the mean of its divisors is an integer number (521168293).

Almost surely, 2^2071478881 is an apocalyptic number.

It is an amenable number.

2071478881 is a deficient number, since it is larger than the sum of its proper divisors (13194291).

2071478881 is a wasteful number, since it uses less digits than its factorization.

2071478881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13194290.

The product of its (nonzero) digits is 200704, while the sum is 46.

The square root of 2071478881 is about 45513.5021834181. The cubic root of 2071478881 is about 1274.7553304192.

The spelling of 2071478881 in words is "two billion, seventy-one million, four hundred seventy-eight thousand, eight hundred eighty-one".