148478981177 has 2 divisors, whose sum is σ = 148478981178. Its totient is φ = 148478981176.

The previous prime is 148478981129. The next prime is 148478981227. The reversal of 148478981177 is 771189874841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102807444496 + 45671536681 = 320636^2 + 213709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148478981177 is a prime.

It is not a weakly prime, because it can be changed into another prime (148478981107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74239490588 + 74239490589.

It is an arithmetic number, because the mean of its divisors is an integer number (74239490589).

Almost surely, 2^148478981177 is an apocalyptic number.

It is an amenable number.

148478981177 is a deficient number, since it is larger than the sum of its proper divisors (1).

148478981177 is an equidigital number, since it uses as much as digits as its factorization.

148478981177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25288704, while the sum is 65.

The spelling of 148478981177 in words is "one hundred forty-eight billion, four hundred seventy-eight million, nine hundred eighty-one thousand, one hundred seventy-seven".