49563974659681 has 4 divisors (see below), whose sum is σ = 49564512654592. Its totient is φ = 49563436664772.

The previous prime is 49563974659637. The next prime is 49563974659721. The reversal of 49563974659681 is 18695647936594.

It is a happy number.

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 not a de Polignac number, because 49563974659681 - 2⁷ = 49563974659553 is a prime.

It is a super-2 number, since 2×49563974659681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49563974659595 and 49563974659604.

It is not an unprimeable number, because it can be changed into a prime (49563974659481) 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, 268859241 + ... + 269043526.

It is an arithmetic number, because the mean of its divisors is an integer number (12391128163648).

Almost surely, 2^{49563974659681} is an apocalyptic number.

It is an amenable number.

49563974659681 is a deficient number, since it is larger than the sum of its proper divisors (537994911).

49563974659681 is an equidigital number, since it uses as much as digits as its factorization.

49563974659681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537994910.

The product of its digits is 10581580800, while the sum is 82.

The spelling of 49563974659681 in words is "forty-nine trillion, five hundred sixty-three billion, nine hundred seventy-four million, six hundred fifty-nine thousand, six hundred eighty-one".