49553726861 has 4 divisors (see below), whose sum is σ = 49554668832. Its totient is φ = 49552784892.

The previous prime is 49553726843. The next prime is 49553726863. The reversal of 49553726861 is 16862735594.

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 a de Polignac number, because none of the positive numbers 2^k-49553726861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49553726797 and 49553726806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49553726863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387095 + ... + 498948.

It is an arithmetic number, because the mean of its divisors is an integer number (12388667208).

Almost surely, 2^49553726861 is an apocalyptic number.

It is an amenable number.

49553726861 is a deficient number, since it is larger than the sum of its proper divisors (941971).

49553726861 is an equidigital number, since it uses as much as digits as its factorization.

49553726861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941970.

The product of its digits is 10886400, while the sum is 56.

The spelling of 49553726861 in words is "forty-nine billion, five hundred fifty-three million, seven hundred twenty-six thousand, eight hundred sixty-one".