2455131515221 has 24 divisors (see below), whose sum is σ = 3084252601472. Its totient is φ = 1913014778400.

The previous prime is 2455131515219. The next prime is 2455131515227. The reversal of 2455131515221 is 1225151315542.

It is not a de Polignac number, because 2455131515221 - 2¹ = 2455131515219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2455131515227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33108616 + ... + 33182686.

Almost surely, 2^{2455131515221} is an apocalyptic number.

It is an amenable number.

2455131515221 is a deficient number, since it is larger than the sum of its proper divisors (629121086251).

2455131515221 is a wasteful number, since it uses less digits than its factorization.

2455131515221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113233 (or 113222 counting only the distinct ones).

The product of its digits is 60000, while the sum is 37.

The spelling of 2455131515221 in words is "two trillion, four hundred fifty-five billion, one hundred thirty-one million, five hundred fifteen thousand, two hundred twenty-one".