172544641083 has 18 divisors (see below), whose sum is σ = 251723349332. Its totient is φ = 113890791600.

The previous prime is 172544641079. The next prime is 172544641097. The reversal of 172544641083 is 380146445271.

172544641083 is a `hidden beast` number, since 1 + 72 + 54 + 46 + 410 + 83 = 666.

It is not a de Polignac number, because 172544641083 - 2² = 172544641079 is a prime.

It is a super-2 number, since 2×172544641083² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172544641883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 847885 + ... + 1031502.

Almost surely, 2^172544641083 is an apocalyptic number.

172544641083 is a deficient number, since it is larger than the sum of its proper divisors (79178708249).

172544641083 is a wasteful number, since it uses less digits than its factorization.

172544641083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879595 (or 1879491 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 172544641083 in words is "one hundred seventy-two billion, five hundred forty-four million, six hundred forty-one thousand, eighty-three".