2078256455 has 16 divisors (see below), whose sum is σ = 2729510784. Its totient is φ = 1506523680.

The previous prime is 2078256449. The next prime is 2078256463. The reversal of 2078256455 is 5546528702.

It is not a de Polignac number, because 2078256455 - 2¹⁸ = 2077994311 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44657 + ... + 78426.

It is an arithmetic number, because the mean of its divisors is an integer number (170594424).

Almost surely, 2^2078256455 is an apocalyptic number.

2078256455 is a deficient number, since it is larger than the sum of its proper divisors (651254329).

2078256455 is a wasteful number, since it uses less digits than its factorization.

2078256455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123406.

The product of its (nonzero) digits is 672000, while the sum is 44.

The square root of 2078256455 is about 45587.8981200055. The cubic root of 2078256455 is about 1276.1440875194.

The spelling of 2078256455 in words is "two billion, seventy-eight million, two hundred fifty-six thousand, four hundred fifty-five".