20420093051 has 2 divisors, whose sum is σ = 20420093052. Its totient is φ = 20420093050.

The previous prime is 20420093033. The next prime is 20420093053. The reversal of 20420093051 is 15039002402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20420093051 - 2¹⁴ = 20420076667 is a prime.

It is a super-2 number, since 2×20420093051² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 20420093053, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20420093051.

It is not a weakly prime, because it can be changed into another prime (20420093053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10210046525 + 10210046526.

It is an arithmetic number, because the mean of its divisors is an integer number (10210046526).

Almost surely, 2^20420093051 is an apocalyptic number.

20420093051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20420093051 is an equidigital number, since it uses as much as digits as its factorization.

20420093051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 20420093051 its reverse (15039002402), we get a palindrome (35459095453).

The spelling of 20420093051 in words is "twenty billion, four hundred twenty million, ninety-three thousand, fifty-one".