42723521311 has 2 divisors, whose sum is σ = 42723521312. Its totient is φ = 42723521310.

The previous prime is 42723521227. The next prime is 42723521339. The reversal of 42723521311 is 11312532724.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42723521311 is a prime.

It is a super-2 number, since 2×42723521311² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42723501311) 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, 21361760655 + 21361760656.

It is an arithmetic number, because the mean of its divisors is an integer number (21361760656).

Almost surely, 2^42723521311 is an apocalyptic number.

42723521311 is a deficient number, since it is larger than the sum of its proper divisors (1).

42723521311 is an equidigital number, since it uses as much as digits as its factorization.

42723521311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The spelling of 42723521311 in words is "forty-two billion, seven hundred twenty-three million, five hundred twenty-one thousand, three hundred eleven".