171772072053 has 8 divisors (see below), whose sum is σ = 234615513216. Its totient is φ = 111721672800.

The previous prime is 171772071979. The next prime is 171772072079. The reversal of 171772072053 is 350270277171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 171772072053 - 2¹⁴ = 171772055669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171772071996 and 171772072014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171772072253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698260333 + ... + 698260578.

It is an arithmetic number, because the mean of its divisors is an integer number (29326939152).

Almost surely, 2^171772072053 is an apocalyptic number.

It is an amenable number.

171772072053 is a deficient number, since it is larger than the sum of its proper divisors (62843441163).

171772072053 is a wasteful number, since it uses less digits than its factorization.

171772072053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396520955.

The product of its (nonzero) digits is 144060, while the sum is 42.

The spelling of 171772072053 in words is "one hundred seventy-one billion, seven hundred seventy-two million, seventy-two thousand, fifty-three".