172308128523370 has 16 divisors (see below), whose sum is σ = 354462435819648. Its totient is φ = 59077072636560.

The previous prime is 172308128523317. The next prime is 172308128523371. The reversal of 172308128523370 is 73325821803271.

It is not an unprimeable number, because it can be changed into a prime (172308128523371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230772346526 + ... + 1230772346665.

It is an arithmetic number, because the mean of its divisors is an integer number (22153902238728).

Almost surely, 2^{172308128523370} is an apocalyptic number.

172308128523370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172308128523370 is an abundant number, since it is smaller than the sum of its proper divisors (182154307296278).

172308128523370 is a wasteful number, since it uses less digits than its factorization.

172308128523370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461544693205.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 172308128523370 in words is "one hundred seventy-two trillion, three hundred eight billion, one hundred twenty-eight million, five hundred twenty-three thousand, three hundred seventy".