10553721173 has 4 divisors (see below), whose sum is σ = 10778268480. Its totient is φ = 10329173868.

The previous prime is 10553721163. The next prime is 10553721187. The reversal of 10553721173 is 37112735501.

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: 37112735501 = 73 ⋅508393637.

It is a cyclic number.

It is not a de Polignac number, because 10553721173 - 2⁶ = 10553721109 is a prime.

It is a super-2 number, since 2×10553721173² (a number of 21 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 (10553721163) 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, 112273583 + ... + 112273676.

It is an arithmetic number, because the mean of its divisors is an integer number (2694567120).

Almost surely, 2^10553721173 is an apocalyptic number.

It is an amenable number.

10553721173 is a deficient number, since it is larger than the sum of its proper divisors (224547307).

10553721173 is an equidigital number, since it uses as much as digits as its factorization.

10553721173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224547306.

The product of its (nonzero) digits is 22050, while the sum is 35.

The spelling of 10553721173 in words is "ten billion, five hundred fifty-three million, seven hundred twenty-one thousand, one hundred seventy-three".