85838780041521 has 16 divisors (see below), whose sum is σ = 123257114568000. Its totient is φ = 52823251609920.

The previous prime is 85838780041507. The next prime is 85838780041583. The reversal of 85838780041521 is 12514008783858.

It is a happy number.

It is not a de Polignac number, because 85838780041521 - 2¹⁵ = 85838780008753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85838780043521) 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 15 ways as a sum of consecutive naturals, for example, 9356271 + ... + 16100228.

It is an arithmetic number, because the mean of its divisors is an integer number (7703569660500).

Almost surely, 2^{85838780041521} is an apocalyptic number.

It is an amenable number.

85838780041521 is a deficient number, since it is larger than the sum of its proper divisors (37418334526479).

85838780041521 is a wasteful number, since it uses less digits than its factorization.

85838780041521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25542976.

The product of its (nonzero) digits is 17203200, while the sum is 60.

The spelling of 85838780041521 in words is "eighty-five trillion, eight hundred thirty-eight billion, seven hundred eighty million, forty-one thousand, five hundred twenty-one".