428064677477 has 2 divisors, whose sum is σ = 428064677478. Its totient is φ = 428064677476.

The previous prime is 428064677429. The next prime is 428064677563. The reversal of 428064677477 is 774776460824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299078828161 + 128985849316 = 546881^2 + 359146^2 .

It is a cyclic number.

It is not a de Polignac number, because 428064677477 - 2²⁶ = 427997568613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428064677177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214032338738 + 214032338739.

It is an arithmetic number, because the mean of its divisors is an integer number (214032338739).

Almost surely, 2^428064677477 is an apocalyptic number.

It is an amenable number.

428064677477 is a deficient number, since it is larger than the sum of its proper divisors (1).

428064677477 is an equidigital number, since it uses as much as digits as its factorization.

428064677477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88510464, while the sum is 62.

The spelling of 428064677477 in words is "four hundred twenty-eight billion, sixty-four million, six hundred seventy-seven thousand, four hundred seventy-seven".