149065727977 has 2 divisors, whose sum is σ = 149065727978. Its totient is φ = 149065727976.

The previous prime is 149065727963. The next prime is 149065728023. The reversal of 149065727977 is 779727560941.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139419345321 + 9646382656 = 373389^2 + 98216^2 .

It is a cyclic number.

It is not a de Polignac number, because 149065727977 - 2¹¹ = 149065725929 is a prime.

It is not a weakly prime, because it can be changed into another prime (149065727947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74532863988 + 74532863989.

It is an arithmetic number, because the mean of its divisors is an integer number (74532863989).

Almost surely, 2^149065727977 is an apocalyptic number.

It is an amenable number.

149065727977 is a deficient number, since it is larger than the sum of its proper divisors (1).

149065727977 is an equidigital number, since it uses as much as digits as its factorization.

149065727977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46675440, while the sum is 64.

The spelling of 149065727977 in words is "one hundred forty-nine billion, sixty-five million, seven hundred twenty-seven thousand, nine hundred seventy-seven".