477981704381 has 2 divisors, whose sum is σ = 477981704382. Its totient is φ = 477981704380.

The previous prime is 477981704353. The next prime is 477981704393. The reversal of 477981704381 is 183407189774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 474624544900 + 3357159481 = 688930^2 + 57941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-477981704381 is a prime.

It is a super-2 number, since 2×477981704381² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 477981704381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477981704581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238990852190 + 238990852191.

It is an arithmetic number, because the mean of its divisors is an integer number (238990852191).

Almost surely, 2^477981704381 is an apocalyptic number.

It is an amenable number.

477981704381 is a deficient number, since it is larger than the sum of its proper divisors (1).

477981704381 is an equidigital number, since it uses as much as digits as its factorization.

477981704381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 477981704381 in words is "four hundred seventy-seven billion, nine hundred eighty-one million, seven hundred four thousand, three hundred eighty-one".