20557612327 has 8 divisors (see below), whose sum is σ = 23495826816. Its totient is φ = 17619751032.

The previous prime is 20557612319. The next prime is 20557612333. The reversal of 20557612327 is 72321675502.

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 20557612327 - 2³ = 20557612319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20557612327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20557612927) 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, 51108 + ... + 209110.

It is an arithmetic number, because the mean of its divisors is an integer number (2936978352).

Almost surely, 2^20557612327 is an apocalyptic number.

20557612327 is a deficient number, since it is larger than the sum of its proper divisors (2938214489).

20557612327 is a wasteful number, since it uses less digits than its factorization.

20557612327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176597.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 20557612327 in words is "twenty billion, five hundred fifty-seven million, six hundred twelve thousand, three hundred twenty-seven".