2506540536918 has 24 divisors (see below), whose sum is σ = 5924550360456. Its totient is φ = 759557738400.

The previous prime is 2506540536917. The next prime is 2506540536937. The reversal of 2506540536918 is 8196350456052.

2506540536918 is a `hidden beast` number, since 2 + 5 + 0 + 6 + 540 + 5 + 3 + 6 + 91 + 8 = 666.

2506540536918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506540536917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6329647623 + ... + 6329648018.

It is an arithmetic number, because the mean of its divisors is an integer number (246856265019).

Almost surely, 2^{2506540536918} is an apocalyptic number.

2506540536918 is an abundant number, since it is smaller than the sum of its proper divisors (3418009823538).

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

2506540536918 is a wasteful number, since it uses less digits than its factorization.

2506540536918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12659295660 (or 12659295657 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 54.

The spelling of 2506540536918 in words is "two trillion, five hundred six billion, five hundred forty million, five hundred thirty-six thousand, nine hundred eighteen".