84637204901 has 2 divisors, whose sum is σ = 84637204902. Its totient is φ = 84637204900.

The previous prime is 84637204891. The next prime is 84637204933. The reversal of 84637204901 is 10940273648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82033552225 + 2603652676 = 286415^2 + 51026^2 .

It is a cyclic number.

It is not a de Polignac number, because 84637204901 - 2¹⁰ = 84637203877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84637204801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42318602450 + 42318602451.

It is an arithmetic number, because the mean of its divisors is an integer number (42318602451).

Almost surely, 2^84637204901 is an apocalyptic number.

It is an amenable number.

84637204901 is a deficient number, since it is larger than the sum of its proper divisors (1).

84637204901 is an equidigital number, since it uses as much as digits as its factorization.

84637204901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 84637204901 in words is "eighty-four billion, six hundred thirty-seven million, two hundred four thousand, nine hundred one".