2151040256 has 36 divisors (see below), whose sum is σ = 4393553472. Its totient is φ = 1050502656.

The previous prime is 2151040223. The next prime is 2151040261. The reversal of 2151040256 is 6520401512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86696 + ... + 108711.

It is an arithmetic number, because the mean of its divisors is an integer number (122043152).

Almost surely, 2^2151040256 is an apocalyptic number.

It is an amenable number.

2151040256 is an abundant number, since it is smaller than the sum of its proper divisors (2242513216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2151040256 is an equidigital number, since it uses as much as digits as its factorization.

2151040256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195466 (or 195452 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2151040256 is about 46379.3084898859. The cubic root of 2151040256 is about 1290.8710052207.

Adding to 2151040256 its reverse (6520401512), we get a palindrome (8671441768).

The spelling of 2151040256 in words is "two billion, one hundred fifty-one million, forty thousand, two hundred fifty-six".