55169157613 has 4 divisors (see below), whose sum is σ = 55191595680. Its totient is φ = 55146719548.

The previous prime is 55169157601. The next prime is 55169157653. The reversal of 55169157613 is 31675196155.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31675196155 = 5 ⋅6335039231.

It is a cyclic number.

It is not a de Polignac number, because 55169157613 - 2⁹ = 55169157101 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55169157653) 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, 11215345 + ... + 11220262.

It is an arithmetic number, because the mean of its divisors is an integer number (13797898920).

Almost surely, 2^55169157613 is an apocalyptic number.

It is an amenable number.

55169157613 is a deficient number, since it is larger than the sum of its proper divisors (22438067).

55169157613 is a wasteful number, since it uses less digits than its factorization.

55169157613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22438066.

The product of its digits is 850500, while the sum is 49.

The spelling of 55169157613 in words is "fifty-five billion, one hundred sixty-nine million, one hundred fifty-seven thousand, six hundred thirteen".