49191005387 has 2 divisors, whose sum is σ = 49191005388. Its totient is φ = 49191005386.

The previous prime is 49191005371. The next prime is 49191005393. The reversal of 49191005387 is 78350019194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49191005387 - 2⁴ = 49191005371 is a prime.

It is not a weakly prime, because it can be changed into another prime (49191005317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24595502693 + 24595502694.

It is an arithmetic number, because the mean of its divisors is an integer number (24595502694).

Almost surely, 2^49191005387 is an apocalyptic number.

49191005387 is a deficient number, since it is larger than the sum of its proper divisors (1).

49191005387 is an equidigital number, since it uses as much as digits as its factorization.

49191005387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 49191005387 in words is "forty-nine billion, one hundred ninety-one million, five thousand, three hundred eighty-seven".