20434077750 has 64 divisors (see below), whose sum is σ = 51405299712. Its totient is φ = 5406156000.

The previous prime is 20434077709. The next prime is 20434077757. The reversal of 20434077750 is 5777043402.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20434077699 and 20434077708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434077757) 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 31 ways as a sum of consecutive naturals, for example, 12016 + ... + 202515.

It is an arithmetic number, because the mean of its divisors is an integer number (803207808).

Almost surely, 2^20434077750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20434077750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25702649856).

20434077750 is an abundant number, since it is smaller than the sum of its proper divisors (30971221962).

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

20434077750 is a wasteful number, since it uses less digits than its factorization.

20434077750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214678 (or 214668 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 39.

The spelling of 20434077750 in words is "twenty billion, four hundred thirty-four million, seventy-seven thousand, seven hundred fifty".