173402135953 has 4 divisors (see below), whose sum is σ = 173404343808. Its totient is φ = 173399928100.

The previous prime is 173402135947. The next prime is 173402135983. The reversal of 173402135953 is 359531204371.

173402135953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 359531204371 = 47 ⋅7649600093.

It is a cyclic number.

It is not a de Polignac number, because 173402135953 - 2⁹ = 173402135441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173402135983) 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, 981601 + ... + 1144702.

It is an arithmetic number, because the mean of its divisors is an integer number (43351085952).

Almost surely, 2^173402135953 is an apocalyptic number.

It is an amenable number.

173402135953 is a deficient number, since it is larger than the sum of its proper divisors (2207855).

173402135953 is an equidigital number, since it uses as much as digits as its factorization.

173402135953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207854.

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 173402135953 in words is "one hundred seventy-three billion, four hundred two million, one hundred thirty-five thousand, nine hundred fifty-three".