85001667591 has 16 divisors (see below), whose sum is σ = 115137259776. Its totient is φ = 55772120256.

The previous prime is 85001667589. The next prime is 85001667637. The reversal of 85001667591 is 19576610058.

It is not a de Polignac number, because 85001667591 - 2¹ = 85001667589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85001667591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85001667691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583510 + ... + 714483.

It is an arithmetic number, because the mean of its divisors is an integer number (7196078736).

Almost surely, 2^85001667591 is an apocalyptic number.

85001667591 is a deficient number, since it is larger than the sum of its proper divisors (30135592185).

85001667591 is a wasteful number, since it uses less digits than its factorization.

85001667591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298342.

The product of its (nonzero) digits is 453600, while the sum is 48.

The spelling of 85001667591 in words is "eighty-five billion, one million, six hundred sixty-seven thousand, five hundred ninety-one".