49581757961 has 32 divisors (see below), whose sum is σ = 53367275520. Its totient is φ = 45960070464.

The previous prime is 49581757937. The next prime is 49581757969. The reversal of 49581757961 is 16975718594.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49581757961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49581757894 and 49581757903.

It is not an unprimeable number, because it can be changed into a prime (49581757969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29813816 + ... + 29815478.

It is an arithmetic number, because the mean of its divisors is an integer number (1667727360).

Almost surely, 2^49581757961 is an apocalyptic number.

It is an amenable number.

49581757961 is a deficient number, since it is larger than the sum of its proper divisors (3785517559).

49581757961 is a wasteful number, since it uses less digits than its factorization.

49581757961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045.

The product of its digits is 19051200, while the sum is 62.

The spelling of 49581757961 in words is "forty-nine billion, five hundred eighty-one million, seven hundred fifty-seven thousand, nine hundred sixty-one".