49188535561 has 8 divisors (see below), whose sum is σ = 53719393824. Its totient is φ = 44667539520.

The previous prime is 49188535559. The next prime is 49188535603. The reversal of 49188535561 is 16553588194.

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 49188535561 - 2¹ = 49188535559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49188535531) 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, 2455120 + ... + 2475073.

It is an arithmetic number, because the mean of its divisors is an integer number (6714924228).

Almost surely, 2^49188535561 is an apocalyptic number.

It is an amenable number.

49188535561 is a deficient number, since it is larger than the sum of its proper divisors (4530858263).

49188535561 is a wasteful number, since it uses less digits than its factorization.

49188535561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931111.

The product of its digits is 5184000, while the sum is 55.

The spelling of 49188535561 in words is "forty-nine billion, one hundred eighty-eight million, five hundred thirty-five thousand, five hundred sixty-one".