172081581610 has 16 divisors (see below), whose sum is σ = 311975244000. Its totient is φ = 68337433296.

The previous prime is 172081581583. The next prime is 172081581673. The reversal of 172081581610 is 16185180271.

It is a super-2 number, since 2×172081581610² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61898460 + ... + 61901239.

It is an arithmetic number, because the mean of its divisors is an integer number (19498452750).

Almost surely, 2^172081581610 is an apocalyptic number.

172081581610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172081581610 is a deficient number, since it is larger than the sum of its proper divisors (139893662390).

172081581610 is a wasteful number, since it uses less digits than its factorization.

172081581610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123799845.

The product of its (nonzero) digits is 26880, while the sum is 40.

The spelling of 172081581610 in words is "one hundred seventy-two billion, eighty-one million, five hundred eighty-one thousand, six hundred ten".