42493249633 has 2 divisors, whose sum is σ = 42493249634. Its totient is φ = 42493249632.

The previous prime is 42493249621. The next prime is 42493249663. The reversal of 42493249633 is 33694239424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26144302864 + 16348946769 = 161692^2 + 127863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42493249633 is a prime.

It is not a weakly prime, because it can be changed into another prime (42493249613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21246624816 + 21246624817.

It is an arithmetic number, because the mean of its divisors is an integer number (21246624817).

Almost surely, 2^42493249633 is an apocalyptic number.

It is an amenable number.

42493249633 is a deficient number, since it is larger than the sum of its proper divisors (1).

42493249633 is an equidigital number, since it uses as much as digits as its factorization.

42493249633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 49.

The spelling of 42493249633 in words is "forty-two billion, four hundred ninety-three million, two hundred forty-nine thousand, six hundred thirty-three".