172031943583 has 16 divisors (see below), whose sum is σ = 186634619136. Its totient is φ = 158142663360.

The previous prime is 172031943571. The next prime is 172031943607. The reversal of 172031943583 is 385349130271.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172031943583 is a prime.

It is a super-2 number, since 2×172031943583² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172031940583) 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, 1298241 + ... + 1424602.

It is an arithmetic number, because the mean of its divisors is an integer number (11664663696).

Almost surely, 2^172031943583 is an apocalyptic number.

172031943583 is a deficient number, since it is larger than the sum of its proper divisors (14602675553).

172031943583 is a wasteful number, since it uses less digits than its factorization.

172031943583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722974.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 172031943583 in words is "one hundred seventy-two billion, thirty-one million, nine hundred forty-three thousand, five hundred eighty-three".