49831196687381 has 2 divisors, whose sum is σ = 49831196687382. Its totient is φ = 49831196687380.

The previous prime is 49831196687369. The next prime is 49831196687407. The reversal of 49831196687381 is 18378669113894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47727510420100 + 2103686267281 = 6908510^2 + 1450409^2 .

It is a cyclic number.

It is not a de Polignac number, because 49831196687381 - 2²² = 49831192493077 is a prime.

It is a super-2 number, since 2×49831196687381² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49831196687299 and 49831196687308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49831196687341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24915598343690 + 24915598343691.

It is an arithmetic number, because the mean of its divisors is an integer number (24915598343691).

Almost surely, 2^{49831196687381} is an apocalyptic number.

It is an amenable number.

49831196687381 is a deficient number, since it is larger than the sum of its proper divisors (1).

49831196687381 is an equidigital number, since it uses as much as digits as its factorization.

49831196687381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376233984, while the sum is 74.

The spelling of 49831196687381 in words is "forty-nine trillion, eight hundred thirty-one billion, one hundred ninety-six million, six hundred eighty-seven thousand, three hundred eighty-one".