20227977750 has 32 divisors (see below), whose sum is σ = 50489034336. Its totient is φ = 5394127200.

The previous prime is 20227977743. The next prime is 20227977787. The reversal of 20227977750 is 5777972202.

It is a self number, because there is not a number n which added to its sum of digits gives 20227977750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13484569 + ... + 13486068.

It is an arithmetic number, because the mean of its divisors is an integer number (1577782323).

Almost surely, 2^20227977750 is an apocalyptic number.

20227977750 is an abundant number, since it is smaller than the sum of its proper divisors (30261056586).

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

20227977750 is a wasteful number, since it uses less digits than its factorization.

20227977750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26970657 (or 26970647 counting only the distinct ones).

The product of its (nonzero) digits is 864360, while the sum is 48.

The spelling of 20227977750 in words is "twenty billion, two hundred twenty-seven million, nine hundred seventy-seven thousand, seven hundred fifty".