326442053557 has 2 divisors, whose sum is σ = 326442053558. Its totient is φ = 326442053556.

The previous prime is 326442053543. The next prime is 326442053591. The reversal of 326442053557 is 755350244623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193352798961 + 133089254596 = 439719^2 + 364814^2 .

It is a cyclic number.

It is not a de Polignac number, because 326442053557 - 2⁷ = 326442053429 is a prime.

It is a super-2 number, since 2×326442053557² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326442056557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163221026778 + 163221026779.

It is an arithmetic number, because the mean of its divisors is an integer number (163221026779).

Almost surely, 2^326442053557 is an apocalyptic number.

It is an amenable number.

326442053557 is a deficient number, since it is larger than the sum of its proper divisors (1).

326442053557 is an equidigital number, since it uses as much as digits as its factorization.

326442053557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024000, while the sum is 46.

The spelling of 326442053557 in words is "three hundred twenty-six billion, four hundred forty-two million, fifty-three thousand, five hundred fifty-seven".