157321648729 has 8 divisors (see below), whose sum is σ = 180305510400. Its totient is φ = 134465122176.

The previous prime is 157321648717. The next prime is 157321648753. The reversal of 157321648729 is 927846123751.

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

It is not a de Polignac number, because 157321648729 - 2¹¹ = 157321646681 is a prime.

It is a super-3 number, since 3×157321648729³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157321648729.

It is not an unprimeable number, because it can be changed into a prime (157321648769) 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 7 ways as a sum of consecutive naturals, for example, 31831129 + ... + 31836070.

It is an arithmetic number, because the mean of its divisors is an integer number (22538188800).

Almost surely, 2^157321648729 is an apocalyptic number.

It is an amenable number.

157321648729 is a deficient number, since it is larger than the sum of its proper divisors (22983861671).

157321648729 is an equidigital number, since it uses as much as digits as its factorization.

157321648729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63667559.

The product of its digits is 5080320, while the sum is 55.

The spelling of 157321648729 in words is "one hundred fifty-seven billion, three hundred twenty-one million, six hundred forty-eight thousand, seven hundred twenty-nine".