338480947477 has 2 divisors, whose sum is σ = 338480947478. Its totient is φ = 338480947476.

The previous prime is 338480947393. The next prime is 338480947523. The reversal of 338480947477 is 774749084833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181850220721 + 156630726756 = 426439^2 + 395766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338480947477 is a prime.

It is a super-2 number, since 2×338480947477² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338480947177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169240473738 + 169240473739.

It is an arithmetic number, because the mean of its divisors is an integer number (169240473739).

Almost surely, 2^338480947477 is an apocalyptic number.

It is an amenable number.

338480947477 is a deficient number, since it is larger than the sum of its proper divisors (1).

338480947477 is an equidigital number, since it uses as much as digits as its factorization.

338480947477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113799168, while the sum is 64.

The spelling of 338480947477 in words is "three hundred thirty-eight billion, four hundred eighty million, nine hundred forty-seven thousand, four hundred seventy-seven".