84538445774501 has 4 divisors (see below), whose sum is σ = 84548537515692. Its totient is φ = 84528354033312.

The previous prime is 84538445774479. The next prime is 84538445774513. The reversal of 84538445774501 is 10547754483548.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25943232902500 + 58595212872001 = 5093450^2 + 7654751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84538445774501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84538445774551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5045858030 + ... + 5045874783.

It is an arithmetic number, because the mean of its divisors is an integer number (21137134378923).

Almost surely, 2^{84538445774501} is an apocalyptic number.

It is an amenable number.

84538445774501 is a deficient number, since it is larger than the sum of its proper divisors (10091741191).

84538445774501 is a wasteful number, since it uses less digits than its factorization.

84538445774501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091741190.

The product of its (nonzero) digits is 301056000, while the sum is 65.

The spelling of 84538445774501 in words is "eighty-four trillion, five hundred thirty-eight billion, four hundred forty-five million, seven hundred seventy-four thousand, five hundred one".