427385077697 has 4 divisors (see below), whose sum is σ = 428906021316. Its totient is φ = 425864134080.

The previous prime is 427385077687. The next prime is 427385077699. The reversal of 427385077697 is 796770583724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 262675725361 + 164709352336 = 512519^2 + 405844^2 .

It is a cyclic number.

It is not a de Polignac number, because 427385077697 - 2¹² = 427385073601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427385077699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760471388 + ... + 760471949.

It is an arithmetic number, because the mean of its divisors is an integer number (107226505329).

Almost surely, 2^427385077697 is an apocalyptic number.

It is an amenable number.

427385077697 is a deficient number, since it is larger than the sum of its proper divisors (1520943619).

427385077697 is a wasteful number, since it uses less digits than its factorization.

427385077697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520943618.

The product of its (nonzero) digits is 124467840, while the sum is 65.

The spelling of 427385077697 in words is "four hundred twenty-seven billion, three hundred eighty-five million, seventy-seven thousand, six hundred ninety-seven".