2718481521 has 16 divisors (see below), whose sum is σ = 4149225344. Its totient is φ = 1550876544.

The previous prime is 2718481499. The next prime is 2718481537. The reversal of 2718481521 is 1251848172.

It is not a de Polignac number, because 2718481521 - 2¹⁴ = 2718465137 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2718481521.

It is not an unprimeable number, because it can be changed into a prime (2718481541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92716 + ... + 118461.

It is an arithmetic number, because the mean of its divisors is an integer number (259326584).

Almost surely, 2^2718481521 is an apocalyptic number.

2718481521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2718481521 is a deficient number, since it is larger than the sum of its proper divisors (1430743823).

2718481521 is a wasteful number, since it uses less digits than its factorization.

2718481521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211800.

The product of its digits is 35840, while the sum is 39.

The square root of 2718481521 is about 52139.0594564190. The cubic root of 2718481521 is about 1395.6465994389.

The spelling of 2718481521 in words is "two billion, seven hundred eighteen million, four hundred eighty-one thousand, five hundred twenty-one".