20020011437 has 2 divisors, whose sum is σ = 20020011438. Its totient is φ = 20020011436.

The previous prime is 20020011433. The next prime is 20020011443. The reversal of 20020011437 is 73411002002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15506724676 + 4513286761 = 124526^2 + 67181^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020011437 - 2² = 20020011433 is a prime.

It is a super-2 number, since 2×20020011437² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020011433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010005718 + 10010005719.

It is an arithmetic number, because the mean of its divisors is an integer number (10010005719).

Almost surely, 2^20020011437 is an apocalyptic number.

It is an amenable number.

20020011437 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020011437 is an equidigital number, since it uses as much as digits as its factorization.

20020011437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 20020011437 its reverse (73411002002), we get a palindrome (93431013439).

The spelling of 20020011437 in words is "twenty billion, twenty million, eleven thousand, four hundred thirty-seven".