49489561571 has 4 divisors (see below), whose sum is σ = 49564660200. Its totient is φ = 49414462944.

The previous prime is 49489561567. The next prime is 49489561637. The reversal of 49489561571 is 17516598494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17516598494 = 2 ⋅8758299247.

It is a cyclic number.

It is not a de Polignac number, because 49489561571 - 2² = 49489561567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49489561571.

It is not an unprimeable number, because it can be changed into a prime (49489561501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37548326 + ... + 37549643.

It is an arithmetic number, because the mean of its divisors is an integer number (12391165050).

Almost surely, 2^49489561571 is an apocalyptic number.

49489561571 is a deficient number, since it is larger than the sum of its proper divisors (75098629).

49489561571 is an equidigital number, since it uses as much as digits as its factorization.

49489561571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75098628.

The product of its digits is 10886400, while the sum is 59.

The spelling of 49489561571 in words is "forty-nine billion, four hundred eighty-nine million, five hundred sixty-one thousand, five hundred seventy-one".