428486774537 has 2 divisors, whose sum is σ = 428486774538. Its totient is φ = 428486774536.

The previous prime is 428486774489. The next prime is 428486774543. The reversal of 428486774537 is 735477684824.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318913196176 + 109573578361 = 564724^2 + 331019^2 .

It is a cyclic number.

It is not a de Polignac number, because 428486774537 - 2⁶ = 428486774473 is a prime.

It is not a weakly prime, because it can be changed into another prime (428486774237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214243387268 + 214243387269.

It is an arithmetic number, because the mean of its divisors is an integer number (214243387269).

Almost surely, 2^428486774537 is an apocalyptic number.

It is an amenable number.

428486774537 is a deficient number, since it is larger than the sum of its proper divisors (1).

428486774537 is an equidigital number, since it uses as much as digits as its factorization.

428486774537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252887040, while the sum is 65.

The spelling of 428486774537 in words is "four hundred twenty-eight billion, four hundred eighty-six million, seven hundred seventy-four thousand, five hundred thirty-seven".