20275646950 has 24 divisors (see below), whose sum is σ = 40613681808. Its totient is φ = 7486392480.

The previous prime is 20275646933. The next prime is 20275646953. The reversal of 20275646950 is 5964657202.

It is a super-2 number, since 2×20275646950² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20275646950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20275646953) 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 11 ways as a sum of consecutive naturals, for example, 15596002 + ... + 15597301.

It is an arithmetic number, because the mean of its divisors is an integer number (1692236742).

Almost surely, 2^20275646950 is an apocalyptic number.

20275646950 is an abundant number, since it is smaller than the sum of its proper divisors (20338034858).

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

20275646950 is a wasteful number, since it uses less digits than its factorization.

20275646950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31193328 (or 31193323 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 20275646950 in words is "twenty billion, two hundred seventy-five million, six hundred forty-six thousand, nine hundred fifty".