53661336167357 has 4 divisors (see below), whose sum is σ = 53661459964860. Its totient is φ = 53661212369856.

The previous prime is 53661336167311. The next prime is 53661336167371. The reversal of 53661336167357 is 75376163316635.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45904771393636 + 7756564773721 = 6775306^2 + 2785061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53661336167357 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 53661336167357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53661336167377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61246268 + ... + 62116245.

It is an arithmetic number, because the mean of its divisors is an integer number (13415364991215).

Almost surely, 2^{53661336167357} is an apocalyptic number.

It is an amenable number.

53661336167357 is a deficient number, since it is larger than the sum of its proper divisors (123797503).

53661336167357 is a wasteful number, since it uses less digits than its factorization.

53661336167357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123797502.

The product of its digits is 128595600, while the sum is 62.

The spelling of 53661336167357 in words is "fifty-three trillion, six hundred sixty-one billion, three hundred thirty-six million, one hundred sixty-seven thousand, three hundred fifty-seven".