20755588623 has 32 divisors (see below), whose sum is σ = 34521956352. Its totient is φ = 10776136800.

The previous prime is 20755588571. The next prime is 20755588661. The reversal of 20755588623 is 32688555702.

It is a Cunningham number, because it is equal to 144068²-1.

It is not a de Polignac number, because 20755588623 - 2¹² = 20755584527 is a prime.

It is a super-2 number, since 2×20755588623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20755588223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408190 + ... + 456212.

It is an arithmetic number, because the mean of its divisors is an integer number (1078811136).

Almost surely, 2^20755588623 is an apocalyptic number.

20755588623 is a deficient number, since it is larger than the sum of its proper divisors (13766367729).

20755588623 is a wasteful number, since it uses less digits than its factorization.

20755588623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49915.

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 20755588623 in words is "twenty billion, seven hundred fifty-five million, five hundred eighty-eight thousand, six hundred twenty-three".