100420636387 has 2 divisors, whose sum is σ = 100420636388. Its totient is φ = 100420636386.

The previous prime is 100420636343. The next prime is 100420636399. The reversal of 100420636387 is 783636024001.

It is a strong prime.

It is an emirp because it is prime and its reverse (783636024001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100420636387 is a prime.

It is not a weakly prime, because it can be changed into another prime (100420631387) 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, 50210318193 + 50210318194.

It is an arithmetic number, because the mean of its divisors is an integer number (50210318194).

Almost surely, 2^100420636387 is an apocalyptic number.

100420636387 is a deficient number, since it is larger than the sum of its proper divisors (1).

100420636387 is an equidigital number, since it uses as much as digits as its factorization.

100420636387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 100420636387 in words is "one hundred billion, four hundred twenty million, six hundred thirty-six thousand, three hundred eighty-seven".