149598947591 has 2 divisors, whose sum is σ = 149598947592. Its totient is φ = 149598947590.

The previous prime is 149598947471. The next prime is 149598947621. The reversal of 149598947591 is 195749895941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149598947591 - 2¹⁸ = 149598685447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149598947191) 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, 74799473795 + 74799473796.

It is an arithmetic number, because the mean of its divisors is an integer number (74799473796).

Almost surely, 2^149598947591 is an apocalyptic number.

149598947591 is a deficient number, since it is larger than the sum of its proper divisors (1).

149598947591 is an equidigital number, since it uses as much as digits as its factorization.

149598947591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146966400, while the sum is 71.

The spelling of 149598947591 in words is "one hundred forty-nine billion, five hundred ninety-eight million, nine hundred forty-seven thousand, five hundred ninety-one".