53666963531 has 8 divisors (see below), whose sum is σ = 53781785904. Its totient is φ = 53552188800.

The previous prime is 53666963527. The next prime is 53666963591. The reversal of 53666963531 is 13536966635.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53666963531 - 2² = 53666963527 is a prime.

It is a super-3 number, since 3×53666963531³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53666963591) 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 7 ways as a sum of consecutive naturals, for example, 3075431 + ... + 3092831.

It is an arithmetic number, because the mean of its divisors is an integer number (6722723238).

Almost surely, 2^53666963531 is an apocalyptic number.

53666963531 is a deficient number, since it is larger than the sum of its proper divisors (114822373).

53666963531 is a wasteful number, since it uses less digits than its factorization.

53666963531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23821.

The product of its digits is 7873200, while the sum is 53.

The spelling of 53666963531 in words is "fifty-three billion, six hundred sixty-six million, nine hundred sixty-three thousand, five hundred thirty-one".