326513280157 has 2 divisors, whose sum is σ = 326513280158. Its totient is φ = 326513280156.

The previous prime is 326513280143. The next prime is 326513280209. The reversal of 326513280157 is 751082315623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322909199001 + 3604081156 = 568251^2 + 60034^2 .

It is a cyclic number.

It is not a de Polignac number, because 326513280157 - 2²³ = 326504891549 is a prime.

It is a super-2 number, since 2×326513280157² (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 (326513280127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163256640078 + 163256640079.

It is an arithmetic number, because the mean of its divisors is an integer number (163256640079).

Almost surely, 2^326513280157 is an apocalyptic number.

It is an amenable number.

326513280157 is a deficient number, since it is larger than the sum of its proper divisors (1).

326513280157 is an equidigital number, since it uses as much as digits as its factorization.

326513280157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 326513280157 in words is "three hundred twenty-six billion, five hundred thirteen million, two hundred eighty thousand, one hundred fifty-seven".