20479737937 has 2 divisors, whose sum is σ = 20479737938. Its totient is φ = 20479737936.

The previous prime is 20479737899. The next prime is 20479738001. The reversal of 20479737937 is 73973797402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12650850576 + 7828887361 = 112476^2 + 88481^2 .

It is a cyclic number.

It is not a de Polignac number, because 20479737937 - 2¹¹ = 20479735889 is a prime.

It is not a weakly prime, because it can be changed into another prime (20479737037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10239868968 + 10239868969.

It is an arithmetic number, because the mean of its divisors is an integer number (10239868969).

Almost surely, 2^20479737937 is an apocalyptic number.

It is an amenable number.

20479737937 is a deficient number, since it is larger than the sum of its proper divisors (1).

20479737937 is an equidigital number, since it uses as much as digits as its factorization.

20479737937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14002632, while the sum is 58.

The spelling of 20479737937 in words is "twenty billion, four hundred seventy-nine million, seven hundred thirty-seven thousand, nine hundred thirty-seven".