540521251043121 has 48 divisors (see below), whose sum is σ = 798381914453760. Its totient is φ = 352283362738560.

The previous prime is 540521251043119. The next prime is 540521251043141. The reversal of 540521251043121 is 121340152125045.

540521251043121 is a `hidden beast` number, since 5 + 4 + 0 + 5 + 2 + 12 + 510 + 4 + 3 + 121 = 666.

It is not a de Polignac number, because 540521251043121 - 2¹ = 540521251043119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (540521251043101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 955879356 + ... + 956444658.

It is an arithmetic number, because the mean of its divisors is an integer number (16632956551120).

Almost surely, 2^{540521251043121} is an apocalyptic number.

It is an amenable number.

540521251043121 is a deficient number, since it is larger than the sum of its proper divisors (257860663410639).

540521251043121 is a wasteful number, since it uses less digits than its factorization.

540521251043121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575966 (or 575963 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 540521251043121 in words is "five hundred forty trillion, five hundred twenty-one billion, two hundred fifty-one million, forty-three thousand, one hundred twenty-one".