2045653177949 has 2 divisors, whose sum is σ = 2045653177950. Its totient is φ = 2045653177948.

The previous prime is 2045653177907. The next prime is 2045653177993. The reversal of 2045653177949 is 9497713565402.

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., 2026585710724 + 19067467225 = 1423582^2 + 138085^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045653177949 - 2¹² = 2045653173853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2045653177891 and 2045653177900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045653177349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022826588974 + 1022826588975.

It is an arithmetic number, because the mean of its divisors is an integer number (1022826588975).

Almost surely, 2^{2045653177949} is an apocalyptic number.

It is an amenable number.

2045653177949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045653177949 is an equidigital number, since it uses as much as digits as its factorization.

2045653177949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57153600, while the sum is 62.

The spelling of 2045653177949 in words is "two trillion, forty-five billion, six hundred fifty-three million, one hundred seventy-seven thousand, nine hundred forty-nine".