172241065257547 has 32 divisors (see below), whose sum is σ = 214260243724800. Its totient is φ = 136033198225920.

The previous prime is 172241065257529. The next prime is 172241065257601. The reversal of 172241065257547 is 745752560142271.

It is a cyclic number.

It is not a de Polignac number, because 172241065257547 - 2¹⁵ = 172241065224779 is a prime.

It is a super-2 number, since 2×172241065257547² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172241065257491 and 172241065257500.

It is not an unprimeable number, because it can be changed into a prime (172241065257347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136145704 + ... + 137405002.

It is an arithmetic number, because the mean of its divisors is an integer number (6695632616400).

Almost surely, 2^{172241065257547} is an apocalyptic number.

172241065257547 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

172241065257547 is a deficient number, since it is larger than the sum of its proper divisors (42019178467253).

172241065257547 is a wasteful number, since it uses less digits than its factorization.

172241065257547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315603.

The product of its (nonzero) digits is 32928000, while the sum is 58.

The spelling of 172241065257547 in words is "one hundred seventy-two trillion, two hundred forty-one billion, sixty-five million, two hundred fifty-seven thousand, five hundred forty-seven".