172864380538768 has 10 divisors (see below), whose sum is σ = 334924737293894. Its totient is φ = 86432190269376.

The previous prime is 172864380538753. The next prime is 172864380538819. The reversal of 172864380538768 is 867835083468271.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 147500344880784 + 25364035657984 = 12144972^2 + 5036272^2 .

It is a super-3 number, since 3×172864380538768³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172864380538694 and 172864380538703.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5402011891821 + ... + 5402011891852.

Almost surely, 2^{172864380538768} is an apocalyptic number.

It is an amenable number.

172864380538768 is a deficient number, since it is larger than the sum of its proper divisors (162060356755126).

172864380538768 is a wasteful number, since it uses less digits than its factorization.

172864380538768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10804023783681 (or 10804023783675 counting only the distinct ones).

The product of its (nonzero) digits is 2601123840, while the sum is 76.

The spelling of 172864380538768 in words is "one hundred seventy-two trillion, eight hundred sixty-four billion, three hundred eighty million, five hundred thirty-eight thousand, seven hundred sixty-eight".