10020423251 has 2 divisors, whose sum is σ = 10020423252. Its totient is φ = 10020423250.

The previous prime is 10020423233. The next prime is 10020423307. The reversal of 10020423251 is 15232402001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020423251 is a prime.

It is not a weakly prime, because it can be changed into another prime (10020423451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010211625 + 5010211626.

It is an arithmetic number, because the mean of its divisors is an integer number (5010211626).

Almost surely, 2^10020423251 is an apocalyptic number.

10020423251 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020423251 is an equidigital number, since it uses as much as digits as its factorization.

10020423251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 10020423251 its reverse (15232402001), we get a palindrome (25252825252).

The spelling of 10020423251 in words is "ten billion, twenty million, four hundred twenty-three thousand, two hundred fifty-one".