20904688750 has 40 divisors (see below), whose sum is σ = 42745935672. Its totient is φ = 7601700000.

The previous prime is 20904688709. The next prime is 20904688757. The reversal of 20904688750 is 5788640902.

It is a junction number, because it is equal to n+sod(n) for n = 20904688694 and 20904688703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20904688757) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 746421 + ... + 773920.

Almost surely, 2^20904688750 is an apocalyptic number.

20904688750 is an abundant number, since it is smaller than the sum of its proper divisors (21841246922).

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

20904688750 is a wasteful number, since it uses less digits than its factorization.

20904688750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520374 (or 1520359 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 20904688750 in words is "twenty billion, nine hundred four million, six hundred eighty-eight thousand, seven hundred fifty".