173020213274 has 4 divisors (see below), whose sum is σ = 259530319914. Its totient is φ = 86510106636.

The previous prime is 173020213271. The next prime is 173020213339. The reversal of 173020213274 is 472312020371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 472312020371 = 839 ⋅562946389.

It can be written as a sum of positive squares in only one way, i.e., 146158642249 + 26861571025 = 382307^2 + 163895^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 173020213274.

It is not an unprimeable number, because it can be changed into a prime (173020213271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43255053317 + ... + 43255053320.

Almost surely, 2^173020213274 is an apocalyptic number.

173020213274 is a deficient number, since it is larger than the sum of its proper divisors (86510106640).

173020213274 is an equidigital number, since it uses as much as digits as its factorization.

173020213274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86510106639.

The product of its (nonzero) digits is 14112, while the sum is 32.

The spelling of 173020213274 in words is "one hundred seventy-three billion, twenty million, two hundred thirteen thousand, two hundred seventy-four".