49831196687509 has 2 divisors, whose sum is σ = 49831196687510. Its totient is φ = 49831196687508.

The previous prime is 49831196687479. The next prime is 49831196687551. The reversal of 49831196687509 is 90578669113894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30777840737284 + 19053355950225 = 5547778^2 + 4365015^2 .

It is a cyclic number.

It is not a de Polignac number, because 49831196687509 - 2⁷ = 49831196687381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49831196688509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24915598343754 + 24915598343755.

It is an arithmetic number, because the mean of its divisors is an integer number (24915598343755).

Almost surely, 2^{49831196687509} is an apocalyptic number.

It is an amenable number.

49831196687509 is a deficient number, since it is larger than the sum of its proper divisors (1).

49831196687509 is an equidigital number, since it uses as much as digits as its factorization.

49831196687509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705438720, while the sum is 76.

The spelling of 49831196687509 in words is "forty-nine trillion, eight hundred thirty-one billion, one hundred ninety-six million, six hundred eighty-seven thousand, five hundred nine".