427545405754531 has 2 divisors, whose sum is σ = 427545405754532. Its totient is φ = 427545405754530.

The previous prime is 427545405754529. The next prime is 427545405754591. The reversal of 427545405754531 is 135457504545724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427545405754531 - 2¹ = 427545405754529 is a prime.

It is a super-3 number, since 3×427545405754531³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 427545405754529, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 427545405754531.

It is not a weakly prime, because it can be changed into another prime (427545405754591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213772702877265 + 213772702877266.

It is an arithmetic number, because the mean of its divisors is an integer number (213772702877266).

Almost surely, 2^{427545405754531} is an apocalyptic number.

427545405754531 is a deficient number, since it is larger than the sum of its proper divisors (1).

427545405754531 is an equidigital number, since it uses as much as digits as its factorization.

427545405754531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235200000, while the sum is 61.

The spelling of 427545405754531 in words is "four hundred twenty-seven trillion, five hundred forty-five billion, four hundred five million, seven hundred fifty-four thousand, five hundred thirty-one".