75672877649 has 2 divisors, whose sum is σ = 75672877650. Its totient is φ = 75672877648.

The previous prime is 75672877583. The next prime is 75672877661. The reversal of 75672877649 is 94677827657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75592003600 + 80874049 = 274940^2 + 8993^2 .

It is a cyclic number.

It is not a de Polignac number, because 75672877649 - 2¹² = 75672873553 is a prime.

It is not a weakly prime, because it can be changed into another prime (75672877349) 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, 37836438824 + 37836438825.

It is an arithmetic number, because the mean of its divisors is an integer number (37836438825).

Almost surely, 2^75672877649 is an apocalyptic number.

It is an amenable number.

75672877649 is a deficient number, since it is larger than the sum of its proper divisors (1).

75672877649 is an equidigital number, since it uses as much as digits as its factorization.

75672877649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248935680, while the sum is 68.

The spelling of 75672877649 in words is "seventy-five billion, six hundred seventy-two million, eight hundred seventy-seven thousand, six hundred forty-nine".