85248937661 has 4 divisors (see below), whose sum is σ = 87998903424. Its totient is φ = 82498971900.

The previous prime is 85248937649. The next prime is 85248937717. The reversal of 85248937661 is 16673984258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85248937661 - 2⁶ = 85248937597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85248937661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85248937061) 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 3 ways as a sum of consecutive naturals, for example, 1374982835 + ... + 1374982896.

It is an arithmetic number, because the mean of its divisors is an integer number (21999725856).

Almost surely, 2^85248937661 is an apocalyptic number.

It is an amenable number.

85248937661 is a deficient number, since it is larger than the sum of its proper divisors (2749965763).

85248937661 is a wasteful number, since it uses less digits than its factorization.

85248937661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749965762.

The product of its digits is 17418240, while the sum is 59.

The spelling of 85248937661 in words is "eighty-five billion, two hundred forty-eight million, nine hundred thirty-seven thousand, six hundred sixty-one".