85591664137 has 8 divisors (see below), whose sum is σ = 97876296000. Its totient is φ = 73321345104.

The previous prime is 85591664117. The next prime is 85591664143. The reversal of 85591664137 is 73146619558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85591664137 - 2²³ = 85583275529 is a prime.

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (85591664117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3565387 + ... + 3589312.

It is an arithmetic number, because the mean of its divisors is an integer number (12234537000).

Almost surely, 2^85591664137 is an apocalyptic number.

It is an amenable number.

85591664137 is a deficient number, since it is larger than the sum of its proper divisors (12284631863).

85591664137 is a wasteful number, since it uses less digits than its factorization.

85591664137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7156415.

The product of its digits is 5443200, while the sum is 55.

The spelling of 85591664137 in words is "eighty-five billion, five hundred ninety-one million, six hundred sixty-four thousand, one hundred thirty-seven".