2145234144377 has 2 divisors, whose sum is σ = 2145234144378. Its totient is φ = 2145234144376.

The previous prime is 2145234144269. The next prime is 2145234144401. The reversal of 2145234144377 is 7734414325412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1943852196841 + 201381947536 = 1394221^2 + 448756^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145234144377 - 2²⁶ = 2145167035513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145234144577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072617072188 + 1072617072189.

It is an arithmetic number, because the mean of its divisors is an integer number (1072617072189).

Almost surely, 2^{2145234144377} is an apocalyptic number.

It is an amenable number.

2145234144377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145234144377 is an equidigital number, since it uses as much as digits as its factorization.

2145234144377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 47.

Adding to 2145234144377 its reverse (7734414325412), we get a palindrome (9879648469789).

The spelling of 2145234144377 in words is "two trillion, one hundred forty-five billion, two hundred thirty-four million, one hundred forty-four thousand, three hundred seventy-seven".