20741919188 has 24 divisors (see below), whose sum is σ = 37200547944. Its totient is φ = 10113420800.

The previous prime is 20741919173. The next prime is 20741919199. The reversal of 20741919188 is 88191914702.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 120384784 + 20621534404 = 10972^2 + 143602^2 .

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, 349178 + ... + 404238.

It is an arithmetic number, because the mean of its divisors is an integer number (1550022831).

Almost surely, 2^20741919188 is an apocalyptic number.

It is an amenable number.

20741919188 is a deficient number, since it is larger than the sum of its proper divisors (16458628756).

20741919188 is a wasteful number, since it uses less digits than its factorization.

20741919188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57403 (or 57401 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 20741919188 in words is "twenty billion, seven hundred forty-one million, nine hundred nineteen thousand, one hundred eighty-eight".