53923208581 has 8 divisors (see below), whose sum is σ = 59653844928. Its totient is φ = 48330660000.

The previous prime is 53923208551. The next prime is 53923208597. The reversal of 53923208581 is 18580232935.

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 53923208581 - 2⁹ = 53923208069 is a prime.

It is a super-2 number, since 2×53923208581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53923208501) 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 7 ways as a sum of consecutive naturals, for example, 34521120 + ... + 34522681.

It is an arithmetic number, because the mean of its divisors is an integer number (7456730616).

Almost surely, 2^53923208581 is an apocalyptic number.

It is an amenable number.

53923208581 is a deficient number, since it is larger than the sum of its proper divisors (5730636347).

53923208581 is a wasteful number, since it uses less digits than its factorization.

53923208581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69043883.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 53923208581 in words is "fifty-three billion, nine hundred twenty-three million, two hundred eight thousand, five hundred eighty-one".