20753321123 has 8 divisors (see below), whose sum is σ = 20788090368. Its totient is φ = 20718582984.

The previous prime is 20753321077. The next prime is 20753321129. The reversal of 20753321123 is 32112335702.

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 20753321123 - 2⁶ = 20753321059 is a prime.

It is a super-3 number, since 3×20753321123³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20753321129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1589540 + ... + 1602542.

It is an arithmetic number, because the mean of its divisors is an integer number (2598511296).

Almost surely, 2^20753321123 is an apocalyptic number.

20753321123 is a deficient number, since it is larger than the sum of its proper divisors (34769245).

20753321123 is a wasteful number, since it uses less digits than its factorization.

20753321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15553.

The product of its (nonzero) digits is 7560, while the sum is 29.

Adding to 20753321123 its reverse (32112335702), we get a palindrome (52865656825).

The spelling of 20753321123 in words is "twenty billion, seven hundred fifty-three million, three hundred twenty-one thousand, one hundred twenty-three".