2256471878 has 4 divisors (see below), whose sum is σ = 3384707820. Its totient is φ = 1128235938.

The previous prime is 2256471871. The next prime is 2256471887. The reversal of 2256471878 is 8781746522.

2256471878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8781746522 = 2 ⋅4390873261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256471871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564117968 + ... + 564117971.

It is an arithmetic number, because the mean of its divisors is an integer number (846176955).

Almost surely, 2^2256471878 is an apocalyptic number.

2256471878 is a deficient number, since it is larger than the sum of its proper divisors (1128235942).

2256471878 is a wasteful number, since it uses less digits than its factorization.

2256471878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128235941.

The product of its digits is 1505280, while the sum is 50.

The square root of 2256471878 is about 47502.3355004783. The cubic root of 2256471878 is about 1311.6258735670.

The spelling of 2256471878 in words is "two billion, two hundred fifty-six million, four hundred seventy-one thousand, eight hundred seventy-eight".