171552772542 has 32 divisors (see below), whose sum is σ = 347364017280. Its totient is φ = 56475007200.

The previous prime is 171552772507. The next prime is 171552772631. The reversal of 171552772542 is 245277255171.

It is a junction number, because it is equal to n+sod(n) for n = 171552772491 and 171552772500.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1359384 + ... + 1480212.

It is an arithmetic number, because the mean of its divisors is an integer number (10855125540).

Almost surely, 2^171552772542 is an apocalyptic number.

171552772542 is an abundant number, since it is smaller than the sum of its proper divisors (175811244738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171552772542 is a wasteful number, since it uses less digits than its factorization.

171552772542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123768.

The product of its digits is 1372000, while the sum is 48.

The spelling of 171552772542 in words is "one hundred seventy-one billion, five hundred fifty-two million, seven hundred seventy-two thousand, five hundred forty-two".