2148663247277 has 4 divisors (see below), whose sum is σ = 2222755083420. Its totient is φ = 2074571411136.

The previous prime is 2148663247273. The next prime is 2148663247351. The reversal of 2148663247277 is 7727423668412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 435878564521 + 1712784682756 = 660211^2 + 1308734^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148663247277 - 2² = 2148663247273 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148663247273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37045918028 + ... + 37045918085.

It is an arithmetic number, because the mean of its divisors is an integer number (555688770855).

Almost surely, 2^{2148663247277} is an apocalyptic number.

It is an amenable number.

2148663247277 is a deficient number, since it is larger than the sum of its proper divisors (74091836143).

2148663247277 is an equidigital number, since it uses as much as digits as its factorization.

2148663247277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74091836142.

The product of its digits is 37933056, while the sum is 59.

The spelling of 2148663247277 in words is "two trillion, one hundred forty-eight billion, six hundred sixty-three million, two hundred forty-seven thousand, two hundred seventy-seven".