20738471437 has 16 divisors (see below), whose sum is σ = 21312720000. Its totient is φ = 20173063680.

The previous prime is 20738471417. The next prime is 20738471441. The reversal of 20738471437 is 73417483702.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20738471437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20738471417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3149893 + ... + 3156469.

It is an arithmetic number, because the mean of its divisors is an integer number (1332045000).

Almost surely, 2^20738471437 is an apocalyptic number.

It is an amenable number.

20738471437 is a deficient number, since it is larger than the sum of its proper divisors (574248563).

20738471437 is an equidigital number, since it uses as much as digits as its factorization.

20738471437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236.

The product of its (nonzero) digits is 790272, while the sum is 46.

The spelling of 20738471437 in words is "twenty billion, seven hundred thirty-eight million, four hundred seventy-one thousand, four hundred thirty-seven".