53665878101 has 4 divisors (see below), whose sum is σ = 58544594304. Its totient is φ = 48787161900.

The previous prime is 53665878083. The next prime is 53665878107. The reversal of 53665878101 is 10187856635.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53665878101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53665878101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53665878107) 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 3 ways as a sum of consecutive naturals, for example, 2439358085 + ... + 2439358106.

It is an arithmetic number, because the mean of its divisors is an integer number (14636148576).

Almost surely, 2^53665878101 is an apocalyptic number.

It is an amenable number.

53665878101 is a deficient number, since it is larger than the sum of its proper divisors (4878716203).

53665878101 is a wasteful number, since it uses less digits than its factorization.

53665878101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878716202.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 53665878101 in words is "fifty-three billion, six hundred sixty-five million, eight hundred seventy-eight thousand, one hundred one".