475438977553 has 2 divisors, whose sum is σ = 475438977554. Its totient is φ = 475438977552.

The previous prime is 475438977511. The next prime is 475438977571. The reversal of 475438977553 is 355779834574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384676569729 + 90762407824 = 620223^2 + 301268^2 .

It is a cyclic number.

It is not a de Polignac number, because 475438977553 - 2¹⁷ = 475438846481 is a prime.

It is not a weakly prime, because it can be changed into another prime (475438977583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237719488776 + 237719488777.

It is an arithmetic number, because the mean of its divisors is an integer number (237719488777).

Almost surely, 2^475438977553 is an apocalyptic number.

It is an amenable number.

475438977553 is a deficient number, since it is larger than the sum of its proper divisors (1).

475438977553 is an equidigital number, since it uses as much as digits as its factorization.

475438977553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528000, while the sum is 67.

The spelling of 475438977553 in words is "four hundred seventy-five billion, four hundred thirty-eight million, nine hundred seventy-seven thousand, five hundred fifty-three".