427355880857 has 2 divisors, whose sum is σ = 427355880858. Its totient is φ = 427355880856.

The previous prime is 427355880827. The next prime is 427355880863. The reversal of 427355880857 is 758088553724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391048864921 + 36307015936 = 625339^2 + 190544^2 .

It is a cyclic number.

It is not a de Polignac number, because 427355880857 - 2²⁴ = 427339103641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 427355880857.

It is not a weakly prime, because it can be changed into another prime (427355880827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213677940428 + 213677940429.

It is an arithmetic number, because the mean of its divisors is an integer number (213677940429).

Almost surely, 2^427355880857 is an apocalyptic number.

It is an amenable number.

427355880857 is a deficient number, since it is larger than the sum of its proper divisors (1).

427355880857 is an equidigital number, since it uses as much as digits as its factorization.

427355880857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264000, while the sum is 62.

The spelling of 427355880857 in words is "four hundred twenty-seven billion, three hundred fifty-five million, eight hundred eighty thousand, eight hundred fifty-seven".