42591037553 has 2 divisors, whose sum is σ = 42591037554. Its totient is φ = 42591037552.

The previous prime is 42591037519. The next prime is 42591037597. The reversal of 42591037553 is 35573019524.

It is an a-pointer prime, because the next prime (42591037597) can be obtained adding 42591037553 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42252035809 + 339001744 = 205553^2 + 18412^2 .

It is a cyclic number.

It is not a de Polignac number, because 42591037553 - 2⁸ = 42591037297 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 (42591039553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21295518776 + 21295518777.

It is an arithmetic number, because the mean of its divisors is an integer number (21295518777).

Almost surely, 2^42591037553 is an apocalyptic number.

It is an amenable number.

42591037553 is a deficient number, since it is larger than the sum of its proper divisors (1).

42591037553 is an equidigital number, since it uses as much as digits as its factorization.

42591037553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 44.

The spelling of 42591037553 in words is "forty-two billion, five hundred ninety-one million, thirty-seven thousand, five hundred fifty-three".