54135565533 has 48 divisors (see below), whose sum is σ = 90188766720. Its totient is φ = 30651283872.

The previous prime is 54135565489. The next prime is 54135565571. The reversal of 54135565533 is 33556553145.

54135565533 is a `hidden beast` number, since 5 + 4 + 1 + 3 + 55 + 65 + 533 = 666.

It is not a de Polignac number, because 54135565533 - 2⁸ = 54135565277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54135565573) 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, 3182910 + ... + 3199872.

It is an arithmetic number, because the mean of its divisors is an integer number (1878932640).

Almost surely, 2^54135565533 is an apocalyptic number.

It is an amenable number.

54135565533 is a deficient number, since it is larger than the sum of its proper divisors (36053201187).

54135565533 is a wasteful number, since it uses less digits than its factorization.

54135565533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17438 (or 17435 counting only the distinct ones).

The product of its digits is 2025000, while the sum is 45.

The spelling of 54135565533 in words is "fifty-four billion, one hundred thirty-five million, five hundred sixty-five thousand, five hundred thirty-three".