85440677837 has 8 divisors (see below), whose sum is σ = 85743006720. Its totient is φ = 85138422480.

The previous prime is 85440677747. The next prime is 85440677849. The reversal of 85440677837 is 73877604458.

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

It is a cyclic number.

It is not a de Polignac number, because 85440677837 - 2¹⁸ = 85440415693 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 (85440677437) 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, 3456512 + ... + 3481142.

It is an arithmetic number, because the mean of its divisors is an integer number (10717875840).

Almost surely, 2^85440677837 is an apocalyptic number.

It is an amenable number.

85440677837 is a deficient number, since it is larger than the sum of its proper divisors (302328883).

85440677837 is a wasteful number, since it uses less digits than its factorization.

85440677837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36763.

The product of its (nonzero) digits is 31610880, while the sum is 59.

The spelling of 85440677837 in words is "eighty-five billion, four hundred forty million, six hundred seventy-seven thousand, eight hundred thirty-seven".