172729659790 has 8 divisors (see below), whose sum is σ = 310913387640. Its totient is φ = 69091863912.

The previous prime is 172729659769. The next prime is 172729659793. The reversal of 172729659790 is 97956927271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172729659793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8636482980 + ... + 8636482999.

It is an arithmetic number, because the mean of its divisors is an integer number (38864173455).

Almost surely, 2^172729659790 is an apocalyptic number.

172729659790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172729659790 is a deficient number, since it is larger than the sum of its proper divisors (138183727850).

172729659790 is a wasteful number, since it uses less digits than its factorization.

172729659790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17272965986.

The product of its (nonzero) digits is 30005640, while the sum is 64.

The spelling of 172729659790 in words is "one hundred seventy-two billion, seven hundred twenty-nine million, six hundred fifty-nine thousand, seven hundred ninety".