49842179489 has 2 divisors, whose sum is σ = 49842179490. Its totient is φ = 49842179488.

The previous prime is 49842179467. The next prime is 49842179507. The reversal of 49842179489 is 98497124894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41507950225 + 8334229264 = 203735^2 + 91292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49842179489 is a prime.

It is a super-2 number, since 2×49842179489² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49842179459) 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 as a sum of consecutive naturals, namely, 24921089744 + 24921089745.

It is an arithmetic number, because the mean of its divisors is an integer number (24921089745).

Almost surely, 2^49842179489 is an apocalyptic number.

It is an amenable number.

49842179489 is a deficient number, since it is larger than the sum of its proper divisors (1).

49842179489 is an equidigital number, since it uses as much as digits as its factorization.

49842179489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 65.

The spelling of 49842179489 in words is "forty-nine billion, eight hundred forty-two million, one hundred seventy-nine thousand, four hundred eighty-nine".