20123809144704 has 96 divisors (see below), whose sum is σ = 58263623581800. Its totient is φ = 6666783335424.

The previous prime is 20123809144687. The next prime is 20123809144721. The reversal of 20123809144704 is 40744190832102.

20123809144704 is a `hidden beast` number, since 2 + 0 + 12 + 3 + 80 + 91 + 4 + 470 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (20123809144687) and next prime (20123809144721).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×20123809144704² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20123809144704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53396839 + ... + 53772390.

Almost surely, 2^{20123809144704} is an apocalyptic number.

20123809144704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20123809144704 is an abundant number, since it is smaller than the sum of its proper divisors (38139814437096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123809144704 is a wasteful number, since it uses less digits than its factorization.

20123809144704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107169412 (or 107169397 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

Adding to 20123809144704 its reverse (40744190832102), we get a palindrome (60867999976806).

The spelling of 20123809144704 in words is "twenty trillion, one hundred twenty-three billion, eight hundred nine million, one hundred forty-four thousand, seven hundred four".