49661591847 has 16 divisors (see below), whose sum is σ = 75703160832. Its totient is φ = 28367419680.

The previous prime is 49661591843. The next prime is 49661591849. The reversal of 49661591847 is 74819516694.

It is not a de Polignac number, because 49661591847 - 2² = 49661591843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49661591843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385479 + ... + 497912.

It is an arithmetic number, because the mean of its divisors is an integer number (4731447552).

Almost surely, 2^49661591847 is an apocalyptic number.

49661591847 is a deficient number, since it is larger than the sum of its proper divisors (26041568985).

49661591847 is a wasteful number, since it uses less digits than its factorization.

49661591847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886078.

The product of its digits is 13063680, while the sum is 60.

The spelling of 49661591847 in words is "forty-nine billion, six hundred sixty-one million, five hundred ninety-one thousand, eight hundred forty-seven".