155847834091 has 2 divisors, whose sum is σ = 155847834092. Its totient is φ = 155847834090.

The previous prime is 155847834049. The next prime is 155847834119. The reversal of 155847834091 is 190438748551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155847834091 - 2¹¹ = 155847832043 is a prime.

It is not a weakly prime, because it can be changed into another prime (155817834091) 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, 77923917045 + 77923917046.

It is an arithmetic number, because the mean of its divisors is an integer number (77923917046).

Almost surely, 2^155847834091 is an apocalyptic number.

155847834091 is a deficient number, since it is larger than the sum of its proper divisors (1).

155847834091 is an equidigital number, since it uses as much as digits as its factorization.

155847834091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 155847834091 in words is "one hundred fifty-five billion, eight hundred forty-seven million, eight hundred thirty-four thousand, ninety-one".