538043956905 has 256 divisors, whose sum is σ = 1150223155200. Its totient is φ = 208406753280.

The previous prime is 538043956859. The next prime is 538043956909. The reversal of 538043956905 is 509659340835.

It is not a de Polignac number, because 538043956905 - 2⁷ = 538043956777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (538043956909) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 260049211 + ... + 260051279.

It is an arithmetic number, because the mean of its divisors is an integer number (4493059200).

Almost surely, 2^538043956905 is an apocalyptic number.

It is an amenable number.

538043956905 is an abundant number, since it is smaller than the sum of its proper divisors (612179198295).

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

538043956905 is a wasteful number, since it uses less digits than its factorization.

538043956905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424.

The product of its (nonzero) digits is 17496000, while the sum is 57.

The spelling of 538043956905 in words is "five hundred thirty-eight billion, forty-three million, nine hundred fifty-six thousand, nine hundred five".