171216556602 has 32 divisors (see below), whose sum is σ = 421456140672. Its totient is φ = 45156014784.

The previous prime is 171216556591. The next prime is 171216556603. The reversal of 171216556602 is 206655612171.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (171216556603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156791173 + ... + 156792264.

It is an arithmetic number, because the mean of its divisors is an integer number (13170504396).

Almost surely, 2^171216556602 is an apocalyptic number.

171216556602 is an abundant number, since it is smaller than the sum of its proper divisors (250239584070).

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

171216556602 is a wasteful number, since it uses less digits than its factorization.

171216556602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313583462.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 171216556602 in words is "one hundred seventy-one billion, two hundred sixteen million, five hundred fifty-six thousand, six hundred two".