2143451377 has 2 divisors, whose sum is σ = 2143451378. Its totient is φ = 2143451376.

The previous prime is 2143451371. The next prime is 2143451381. The reversal of 2143451377 is 7731543412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1390991616 + 752459761 = 37296^2 + 27431^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143451377 - 2⁷ = 2143451249 is a prime.

It is a super-2 number, since 2×2143451377² = 9188767611126392258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2143451371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071725688 + 1071725689.

It is an arithmetic number, because the mean of its divisors is an integer number (1071725689).

Almost surely, 2^2143451377 is an apocalyptic number.

It is an amenable number.

2143451377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143451377 is an equidigital number, since it uses as much as digits as its factorization.

2143451377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 37.

The square root of 2143451377 is about 46297.4230060378. The cubic root of 2143451377 is about 1289.3511503677.

Adding to 2143451377 its reverse (7731543412), we get a palindrome (9874994789).

The spelling of 2143451377 in words is "two billion, one hundred forty-three million, four hundred fifty-one thousand, three hundred seventy-seven".