42551304509969 has 2 divisors, whose sum is σ = 42551304509970. Its totient is φ = 42551304509968.

The previous prime is 42551304509873. The next prime is 42551304510019. The reversal of 42551304509969 is 96990540315524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42488391329344 + 62913180625 = 6518312^2 + 250825^2 .

It is a cyclic number.

It is not a de Polignac number, because 42551304509969 - 2²⁴ = 42551287732753 is a prime.

It is a super-2 number, since 2×42551304509969² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42551304509269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21275652254984 + 21275652254985.

It is an arithmetic number, because the mean of its divisors is an integer number (21275652254985).

Almost surely, 2^{42551304509969} is an apocalyptic number.

It is an amenable number.

42551304509969 is a deficient number, since it is larger than the sum of its proper divisors (1).

42551304509969 is an equidigital number, since it uses as much as digits as its factorization.

42551304509969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488000, while the sum is 62.

The spelling of 42551304509969 in words is "forty-two trillion, five hundred fifty-one billion, three hundred four million, five hundred nine thousand, nine hundred sixty-nine".