427312791361 has 2 divisors, whose sum is σ = 427312791362. Its totient is φ = 427312791360.

The previous prime is 427312791337. The next prime is 427312791379. The reversal of 427312791361 is 163197213724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250865748225 + 176447043136 = 500865^2 + 420056^2 .

It is a cyclic number.

It is not a de Polignac number, because 427312791361 - 2⁵ = 427312791329 is a prime.

It is a super-3 number, since 3×427312791361³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (427312795361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213656395680 + 213656395681.

It is an arithmetic number, because the mean of its divisors is an integer number (213656395681).

Almost surely, 2^427312791361 is an apocalyptic number.

It is an amenable number.

427312791361 is a deficient number, since it is larger than the sum of its proper divisors (1).

427312791361 is an equidigital number, since it uses as much as digits as its factorization.

427312791361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The spelling of 427312791361 in words is "four hundred twenty-seven billion, three hundred twelve million, seven hundred ninety-one thousand, three hundred sixty-one".