172280739969 has 32 divisors (see below), whose sum is σ = 275054102400. Its totient is φ = 105945537600.

The previous prime is 172280739949. The next prime is 172280740007. The reversal of 172280739969 is 969937082271.

172280739969 is a `hidden beast` number, since 17 + 228 + 0 + 7 + 399 + 6 + 9 = 666.

It is not a de Polignac number, because 172280739969 - 2⁹ = 172280739457 is a prime.

It is a super-2 number, since 2×172280739969² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172280739949) 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 31 ways as a sum of consecutive naturals, for example, 340167 + ... + 678435.

It is an arithmetic number, because the mean of its divisors is an integer number (8595440700).

Almost surely, 2^172280739969 is an apocalyptic number.

It is an amenable number.

172280739969 is a deficient number, since it is larger than the sum of its proper divisors (102773362431).

172280739969 is a wasteful number, since it uses less digits than its factorization.

172280739969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339742 (or 339736 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 63.

The spelling of 172280739969 in words is "one hundred seventy-two billion, two hundred eighty million, seven hundred thirty-nine thousand, nine hundred sixty-nine".