2455131515220 has 120 divisors (see below), whose sum is σ = 7707454973064. Its totient is φ = 654224304384.

The previous prime is 2455131515219. The next prime is 2455131515227. The reversal of 2455131515220 is 225151315542.

2455131515220 is a `hidden beast` number, since 2 + 4 + 5 + 5 + 131 + 515 + 2 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 914310790416 + 1540820724804 = 956196^2 + 1241298^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1672362 + ... + 2776158.

Almost surely, 2^{2455131515220} is an apocalyptic number.

2455131515220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2455131515220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3853727486532).

2455131515220 is an abundant number, since it is smaller than the sum of its proper divisors (5252323457844).

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

2455131515220 is a wasteful number, since it uses less digits than its factorization.

2455131515220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105191 (or 1105180 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 2455131515220 in words is "two trillion, four hundred fifty-five billion, one hundred thirty-one million, five hundred fifteen thousand, two hundred twenty".