42511141649 has 2 divisors, whose sum is σ = 42511141650. Its totient is φ = 42511141648.

The previous prime is 42511141639. The next prime is 42511141669. The reversal of 42511141649 is 94614111524.

42511141649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41575210000 + 935931649 = 203900^2 + 30593^2 .

It is a cyclic number.

It is not a de Polignac number, because 42511141649 - 2¹² = 42511137553 is a prime.

It is not a weakly prime, because it can be changed into another prime (42511141639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21255570824 + 21255570825.

It is an arithmetic number, because the mean of its divisors is an integer number (21255570825).

Almost surely, 2^42511141649 is an apocalyptic number.

It is an amenable number.

42511141649 is a deficient number, since it is larger than the sum of its proper divisors (1).

42511141649 is an equidigital number, since it uses as much as digits as its factorization.

42511141649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The spelling of 42511141649 in words is "forty-two billion, five hundred eleven million, one hundred forty-one thousand, six hundred forty-nine".