7545061649 has 2 divisors, whose sum is σ = 7545061650. Its totient is φ = 7545061648.

The previous prime is 7545061619. The next prime is 7545061661. The reversal of 7545061649 is 9461605457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7336779025 + 208282624 = 85655^2 + 14432^2 .

It is a cyclic number.

It is not a de Polignac number, because 7545061649 - 2⁸ = 7545061393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7545061619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3772530824 + 3772530825.

It is an arithmetic number, because the mean of its divisors is an integer number (3772530825).

Almost surely, 2^7545061649 is an apocalyptic number.

It is an amenable number.

7545061649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7545061649 is an equidigital number, since it uses as much as digits as its factorization.

7545061649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 7545061649 is about 86862.3143198476. The cubic root of 7545061649 is about 1961.3462264062.

The spelling of 7545061649 in words is "seven billion, five hundred forty-five million, sixty-one thousand, six hundred forty-nine".