2515541540240 has 20 divisors (see below), whose sum is σ = 5848634081244. Its totient is φ = 1006216616064.

The previous prime is 2515541540227. The next prime is 2515541540251. The reversal of 2515541540240 is 420451455152.

It can be written as a sum of positive squares in 2 ways, for example, as 829002966016 + 1686538574224 = 910496^2 + 1298668^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 2515541540194 and 2515541540203.

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, 15722134547 + ... + 15722134706.

Almost surely, 2^{2515541540240} is an apocalyptic number.

2515541540240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2515541540240 is an abundant number, since it is smaller than the sum of its proper divisors (3333092541004).

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

2515541540240 is a wasteful number, since it uses less digits than its factorization.

2515541540240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31444269266 (or 31444269260 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

Adding to 2515541540240 its reverse (420451455152), we get a palindrome (2935992995392).

The spelling of 2515541540240 in words is "two trillion, five hundred fifteen billion, five hundred forty-one million, five hundred forty thousand, two hundred forty".