20673121750 has 16 divisors (see below), whose sum is σ = 38700084384. Its totient is φ = 8269248600.

The previous prime is 20673121747. The next prime is 20673121769. The reversal of 20673121750 is 5712137602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41345994 + ... + 41346493.

It is an arithmetic number, because the mean of its divisors is an integer number (2418755274).

Almost surely, 2^20673121750 is an apocalyptic number.

20673121750 is a deficient number, since it is larger than the sum of its proper divisors (18026962634).

20673121750 is an equidigital number, since it uses as much as digits as its factorization.

20673121750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82692504 (or 82692494 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 20673121750 in words is "twenty billion, six hundred seventy-three million, one hundred twenty-one thousand, seven hundred fifty".