20221840737 has 48 divisors (see below), whose sum is σ = 34724551680. Its totient is φ = 11095056000.

The previous prime is 20221840729. The next prime is 20221840739. The reversal of 20221840737 is 73704812202.

20221840737 is a `hidden beast` number, since 2 + 0 + 2 + 218 + 407 + 37 = 666.

It is not a de Polignac number, because 20221840737 - 2³ = 20221840729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20221840739) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 300112 + ... + 361262.

It is an arithmetic number, because the mean of its divisors is an integer number (723428160).

Almost surely, 2^20221840737 is an apocalyptic number.

It is an amenable number.

20221840737 is a deficient number, since it is larger than the sum of its proper divisors (14502710943).

20221840737 is a wasteful number, since it uses less digits than its factorization.

20221840737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61374 (or 61371 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 20221840737 in words is "twenty billion, two hundred twenty-one million, eight hundred forty thousand, seven hundred thirty-seven".