172688755078 has 32 divisors (see below), whose sum is σ = 301544324928. Its totient is φ = 72638121600.

The previous prime is 172688755069. The next prime is 172688755081. The reversal of 172688755078 is 870557886271.

172688755078 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×172688755078² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174376 + ... + 613012.

It is an arithmetic number, because the mean of its divisors is an integer number (9423260154).

Almost surely, 2^172688755078 is an apocalyptic number.

172688755078 is a deficient number, since it is larger than the sum of its proper divisors (128855569850).

172688755078 is a wasteful number, since it uses less digits than its factorization.

172688755078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439168.

The product of its (nonzero) digits is 52684800, while the sum is 64.

The spelling of 172688755078 in words is "one hundred seventy-two billion, six hundred eighty-eight million, seven hundred fifty-five thousand, seventy-eight".