172031271577 has 8 divisors (see below), whose sum is σ = 194141874240. Its totient is φ = 150999234960.

The previous prime is 172031271547. The next prime is 172031271589. The reversal of 172031271577 is 775172130271.

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

It is a cyclic number.

It is not a de Polignac number, because 172031271577 - 2¹⁹ = 172030747289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172031271527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269641173 + ... + 269641810.

It is an arithmetic number, because the mean of its divisors is an integer number (24267734280).

Almost surely, 2^172031271577 is an apocalyptic number.

It is an amenable number.

172031271577 is a deficient number, since it is larger than the sum of its proper divisors (22110602663).

172031271577 is a wasteful number, since it uses less digits than its factorization.

172031271577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539283023.

The product of its (nonzero) digits is 144060, while the sum is 43.

The spelling of 172031271577 in words is "one hundred seventy-two billion, thirty-one million, two hundred seventy-one thousand, five hundred seventy-seven".