10420555687 has 2 divisors, whose sum is σ = 10420555688. Its totient is φ = 10420555686.

The previous prime is 10420555669. The next prime is 10420555693. The reversal of 10420555687 is 78655502401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10420555687 - 2¹⁵ = 10420522919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10420553687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210277843 + 5210277844.

It is an arithmetic number, because the mean of its divisors is an integer number (5210277844).

Almost surely, 2^10420555687 is an apocalyptic number.

10420555687 is a deficient number, since it is larger than the sum of its proper divisors (1).

10420555687 is an equidigital number, since it uses as much as digits as its factorization.

10420555687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 10420555687 in words is "ten billion, four hundred twenty million, five hundred fifty-five thousand, six hundred eighty-seven".