53666719899181 has 8 divisors (see below), whose sum is σ = 54076905758304. Its totient is φ = 53256541862160.

The previous prime is 53666719899151. The next prime is 53666719899203. The reversal of 53666719899181 is 18199891766635.

It is a happy number.

53666719899181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53666719899181 - 2¹³ = 53666719890989 is a prime.

It is a super-2 number, since 2×53666719899181² (a number of 28 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 (53666719899131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12209326 + ... + 16012528.

It is an arithmetic number, because the mean of its divisors is an integer number (6759613219788).

Almost surely, 2^{53666719899181} is an apocalyptic number.

It is an amenable number.

53666719899181 is a deficient number, since it is larger than the sum of its proper divisors (410185859123).

53666719899181 is a wasteful number, since it uses less digits than its factorization.

53666719899181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911051.

The product of its digits is 1058158080, while the sum is 79.

The spelling of 53666719899181 in words is "fifty-three trillion, six hundred sixty-six billion, seven hundred nineteen million, eight hundred ninety-nine thousand, one hundred eighty-one".