53637508640 has 24 divisors (see below), whose sum is σ = 126718614540. Its totient is φ = 21455003392.

The previous prime is 53637508619. The next prime is 53637508643. The reversal of 53637508640 is 4680573635.

It can be written as a sum of positive squares in 2 ways, for example, as 53581138576 + 56370064 = 231476^2 + 7508^2 .

It is not an unprimeable number, because it can be changed into a prime (53637508643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 167617055 + ... + 167617374.

Almost surely, 2^53637508640 is an apocalyptic number.

It is an amenable number.

53637508640 is an abundant number, since it is smaller than the sum of its proper divisors (73081105900).

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

53637508640 is a wasteful number, since it uses less digits than its factorization.

53637508640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335234444 (or 335234436 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 53637508640 in words is "fifty-three billion, six hundred thirty-seven million, five hundred eight thousand, six hundred forty".