53641533561 has 32 divisors (see below), whose sum is σ = 89395104768. Its totient is φ = 27795493440.

The previous prime is 53641533541. The next prime is 53641533577. The reversal of 53641533561 is 16533514635.

It is a happy number.

It is not a de Polignac number, because 53641533561 - 2¹⁰ = 53641532537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53641533541) 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 31 ways as a sum of consecutive naturals, for example, 200755 + ... + 384168.

It is an arithmetic number, because the mean of its divisors is an integer number (2793597024).

Almost surely, 2^53641533561 is an apocalyptic number.

It is an amenable number.

53641533561 is a deficient number, since it is larger than the sum of its proper divisors (35753571207).

53641533561 is a wasteful number, since it uses less digits than its factorization.

53641533561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585341.

The product of its digits is 486000, while the sum is 42.

The spelling of 53641533561 in words is "fifty-three billion, six hundred forty-one million, five hundred thirty-three thousand, five hundred sixty-one".