52685405040 has 40 divisors (see below), whose sum is σ = 163324756368. Its totient is φ = 14049441280.

The previous prime is 52685405033. The next prime is 52685405057. The reversal of 52685405040 is 4050458625.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 52685405040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109761021 + ... + 109761500.

Almost surely, 2^52685405040 is an apocalyptic number.

It is an amenable number.

52685405040 is an abundant number, since it is smaller than the sum of its proper divisors (110639351328).

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

52685405040 is a wasteful number, since it uses less digits than its factorization.

52685405040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219522537 (or 219522531 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 52685405040 in words is "fifty-two billion, six hundred eighty-five million, four hundred five thousand, forty".