149247771847 has 2 divisors, whose sum is σ = 149247771848. Its totient is φ = 149247771846.

The previous prime is 149247771833. The next prime is 149247771851. The reversal of 149247771847 is 748177742941.

It is a strong prime.

It is an emirp because it is prime and its reverse (748177742941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149247771847 - 2³⁵ = 114888033479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149247771047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74623885923 + 74623885924.

It is an arithmetic number, because the mean of its divisors is an integer number (74623885924).

Almost surely, 2^149247771847 is an apocalyptic number.

149247771847 is a deficient number, since it is larger than the sum of its proper divisors (1).

149247771847 is an equidigital number, since it uses as much as digits as its factorization.

149247771847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22127616, while the sum is 61.

The spelling of 149247771847 in words is "one hundred forty-nine billion, two hundred forty-seven million, seven hundred seventy-one thousand, eight hundred forty-seven".