49518554819 has 2 divisors, whose sum is σ = 49518554820. Its totient is φ = 49518554818.

The previous prime is 49518554797. The next prime is 49518554849. The reversal of 49518554819 is 91845581594.

49518554819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49518554819 is a prime.

It is a super-2 number, since 2×49518554819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49518554849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24759277409 + 24759277410.

It is an arithmetic number, because the mean of its divisors is an integer number (24759277410).

Almost surely, 2^49518554819 is an apocalyptic number.

49518554819 is a deficient number, since it is larger than the sum of its proper divisors (1).

49518554819 is an equidigital number, since it uses as much as digits as its factorization.

49518554819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368000, while the sum is 59.

The spelling of 49518554819 in words is "forty-nine billion, five hundred eighteen million, five hundred fifty-four thousand, eight hundred nineteen".