49185250091 has 2 divisors, whose sum is σ = 49185250092. Its totient is φ = 49185250090.

The previous prime is 49185250073. The next prime is 49185250097. The reversal of 49185250091 is 19005258194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49185250091 - 2¹⁴ = 49185233707 is a prime.

It is not a weakly prime, because it can be changed into another prime (49185250097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24592625045 + 24592625046.

It is an arithmetic number, because the mean of its divisors is an integer number (24592625046).

Almost surely, 2^49185250091 is an apocalyptic number.

49185250091 is a deficient number, since it is larger than the sum of its proper divisors (1).

49185250091 is an equidigital number, since it uses as much as digits as its factorization.

49185250091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 49185250091 in words is "forty-nine billion, one hundred eighty-five million, two hundred fifty thousand, ninety-one".