20102430437 has 2 divisors, whose sum is σ = 20102430438. Its totient is φ = 20102430436.

The previous prime is 20102430389. The next prime is 20102430449. The reversal of 20102430437 is 73403420102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18940915876 + 1161514561 = 137626^2 + 34081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102430437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102430497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051215218 + 10051215219.

It is an arithmetic number, because the mean of its divisors is an integer number (10051215219).

Almost surely, 2^20102430437 is an apocalyptic number.

It is an amenable number.

20102430437 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102430437 is an equidigital number, since it uses as much as digits as its factorization.

20102430437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 20102430437 its reverse (73403420102), we get a palindrome (93505850539).

The spelling of 20102430437 in words is "twenty billion, one hundred two million, four hundred thirty thousand, four hundred thirty-seven".