20125718761744 has 80 divisors (see below), whose sum is σ = 40136080692400. Its totient is φ = 9769247834112.

The previous prime is 20125718761697. The next prime is 20125718761763. The reversal of 20125718761744 is 44716781752102.

It can be written as a sum of positive squares in 8 ways, for example, as 299003363344 + 19826715398400 = 546812^2 + 4452720^2 .

It is a super-4 number, since 4×20125718761744⁴ (a number of 54 digits) contains 4444 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 513955414 + ... + 513994570.

It is an arithmetic number, because the mean of its divisors is an integer number (501701008655).

Almost surely, 2^{20125718761744} is an apocalyptic number.

It is an amenable number.

20125718761744 is a deficient number, since it is larger than the sum of its proper divisors (20010361930656).

20125718761744 is a wasteful number, since it uses less digits than its factorization.

20125718761744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41100 (or 41094 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 55.

The spelling of 20125718761744 in words is "twenty trillion, one hundred twenty-five billion, seven hundred eighteen million, seven hundred sixty-one thousand, seven hundred forty-four".