23578157329 has 8 divisors (see below), whose sum is σ = 24043229352. Its totient is φ = 23113833600.

The previous prime is 23578157321. The next prime is 23578157353. The reversal of 23578157329 is 92375187532.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1168067329 + 22410090000 = 34177^2 + 149700^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23578157329 - 2³ = 23578157321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23578157321) 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, 123222 + ... + 249679.

It is an arithmetic number, because the mean of its divisors is an integer number (3005403669).

Almost surely, 2^23578157329 is an apocalyptic number.

It is an amenable number.

23578157329 is a deficient number, since it is larger than the sum of its proper divisors (465072023).

23578157329 is a wasteful number, since it uses less digits than its factorization.

23578157329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374147.

The product of its digits is 3175200, while the sum is 52.

The spelling of 23578157329 in words is "twenty-three billion, five hundred seventy-eight million, one hundred fifty-seven thousand, three hundred twenty-nine".