42499455811 has 2 divisors, whose sum is σ = 42499455812. Its totient is φ = 42499455810.

The previous prime is 42499455799. The next prime is 42499455841. The reversal of 42499455811 is 11855499424.

42499455811 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 is a cyclic number.

It is not a de Polignac number, because 42499455811 - 2¹⁷ = 42499324739 is a prime.

It is a super-2 number, since 2×42499455811² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42499455841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21249727905 + 21249727906.

It is an arithmetic number, because the mean of its divisors is an integer number (21249727906).

Almost surely, 2^42499455811 is an apocalyptic number.

42499455811 is a deficient number, since it is larger than the sum of its proper divisors (1).

42499455811 is an equidigital number, since it uses as much as digits as its factorization.

42499455811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 52.

The spelling of 42499455811 in words is "forty-two billion, four hundred ninety-nine million, four hundred fifty-five thousand, eight hundred eleven".