2518651855 has 4 divisors (see below), whose sum is σ = 3022382232. Its totient is φ = 2014921480.

The previous prime is 2518651831. The next prime is 2518651859. The reversal of 2518651855 is 5581568152.

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

It is not a de Polignac number, because 2518651855 - 2¹⁷ = 2518520783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2518651859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251865181 + ... + 251865190.

It is an arithmetic number, because the mean of its divisors is an integer number (755595558).

Almost surely, 2^2518651855 is an apocalyptic number.

2518651855 is a deficient number, since it is larger than the sum of its proper divisors (503730377).

2518651855 is an equidigital number, since it uses as much as digits as its factorization.

2518651855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503730376.

The product of its digits is 480000, while the sum is 46.

The square root of 2518651855 is about 50186.1719500501. The cubic root of 2518651855 is about 1360.5757105182.

The spelling of 2518651855 in words is "two billion, five hundred eighteen million, six hundred fifty-one thousand, eight hundred fifty-five".