74748653633 has 2 divisors, whose sum is σ = 74748653634. Its totient is φ = 74748653632.

The previous prime is 74748653593. The next prime is 74748653641. The reversal of 74748653633 is 33635684747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70207511089 + 4541142544 = 264967^2 + 67388^2 .

It is a cyclic number.

It is not a de Polignac number, because 74748653633 - 2³⁰ = 73674911809 is a prime.

It is a super-2 number, since 2×74748653633² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74748653653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37374326816 + 37374326817.

It is an arithmetic number, because the mean of its divisors is an integer number (37374326817).

Almost surely, 2^74748653633 is an apocalyptic number.

It is an amenable number.

74748653633 is a deficient number, since it is larger than the sum of its proper divisors (1).

74748653633 is an equidigital number, since it uses as much as digits as its factorization.

74748653633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 56.

The spelling of 74748653633 in words is "seventy-four billion, seven hundred forty-eight million, six hundred fifty-three thousand, six hundred thirty-three".