53520351687 has 12 divisors (see below), whose sum is σ = 84335099784. Its totient is φ = 32436576720.

The previous prime is 53520351683. The next prime is 53520351737. The reversal of 53520351687 is 78615302535.

53520351687 is a `hidden beast` number, since 5 + 3 + 52 + 0 + 3 + 516 + 87 = 666.

It is not a de Polignac number, because 53520351687 - 2² = 53520351683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53520351683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270304708 + ... + 270304905.

It is an arithmetic number, because the mean of its divisors is an integer number (7027924982).

Almost surely, 2^53520351687 is an apocalyptic number.

53520351687 is a deficient number, since it is larger than the sum of its proper divisors (30814748097).

53520351687 is a wasteful number, since it uses less digits than its factorization.

53520351687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540609630 (or 540609627 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 53520351687 in words is "fifty-three billion, five hundred twenty million, three hundred fifty-one thousand, six hundred eighty-seven".