478665627481 has 2 divisors, whose sum is σ = 478665627482. Its totient is φ = 478665627480.

The previous prime is 478665627467. The next prime is 478665627553. The reversal of 478665627481 is 184726566874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425027067481 + 53638560000 = 651941^2 + 231600^2 .

It is a cyclic number.

It is not a de Polignac number, because 478665627481 - 2¹⁹ = 478665103193 is a prime.

It is a super-2 number, since 2×478665627481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (478665621481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239332813740 + 239332813741.

It is an arithmetic number, because the mean of its divisors is an integer number (239332813741).

Almost surely, 2^478665627481 is an apocalyptic number.

It is an amenable number.

478665627481 is a deficient number, since it is larger than the sum of its proper divisors (1).

478665627481 is an equidigital number, since it uses as much as digits as its factorization.

478665627481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108380160, while the sum is 64.

The spelling of 478665627481 in words is "four hundred seventy-eight billion, six hundred sixty-five million, six hundred twenty-seven thousand, four hundred eighty-one".