85117503437 has 6 divisors (see below), whose sum is σ = 88979167662. Its totient is φ = 81416741912.

The previous prime is 85117503409. The next prime is 85117503451. The reversal of 85117503437 is 73430571158.

It can be written as a sum of positive squares in only one way, i.e., 70961500996 + 14156002441 = 266386^2 + 118979^2 .

It is not a de Polignac number, because 85117503437 - 2¹⁴ = 85117487053 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 (85117503407) 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 in 5 ways as a sum of consecutive naturals, for example, 80450798 + ... + 80451855.

It is an arithmetic number, because the mean of its divisors is an integer number (14829861277).

Almost surely, 2^85117503437 is an apocalyptic number.

It is an amenable number.

85117503437 is a deficient number, since it is larger than the sum of its proper divisors (3861664225).

85117503437 is a wasteful number, since it uses less digits than its factorization.

85117503437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160902699 (or 160902676 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 85117503437 in words is "eighty-five billion, one hundred seventeen million, five hundred three thousand, four hundred thirty-seven".