540554636520 has 96 divisors (see below), whose sum is σ = 1860143917320. Its totient is φ = 135668613120.

The previous prime is 540554636459. The next prime is 540554636521. The reversal of 540554636520 is 25636455045.

540554636520 is a `hidden beast` number, since 5 + 4 + 0 + 5 + 5 + 4 + 636 + 5 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 529788913956 + 10765722564 = 727866^2 + 103758^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (540554636521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44156841 + ... + 44169080.

Almost surely, 2^540554636520 is an apocalyptic number.

It is an amenable number.

540554636520 is an abundant number, since it is smaller than the sum of its proper divisors (1319589280800).

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

540554636520 is a wasteful number, since it uses less digits than its factorization.

540554636520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88325955 (or 88325948 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 540554636520 in words is "five hundred forty billion, five hundred fifty-four million, six hundred thirty-six thousand, five hundred twenty".