20550001750 has 32 divisors (see below), whose sum is σ = 39796155360. Its totient is φ = 7936549600.

The previous prime is 20550001697. The next prime is 20550001757. The reversal of 20550001750 is 5710005502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20550001757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1409992 + ... + 1424491.

It is an arithmetic number, because the mean of its divisors is an integer number (1243629855).

Almost surely, 2^20550001750 is an apocalyptic number.

20550001750 is a deficient number, since it is larger than the sum of its proper divisors (19246153610).

20550001750 is a wasteful number, since it uses less digits than its factorization.

20550001750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834529 (or 2834519 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The spelling of 20550001750 in words is "twenty billion, five hundred fifty million, one thousand, seven hundred fifty".