481553406623857 has 2 divisors, whose sum is σ = 481553406623858. Its totient is φ = 481553406623856.

The previous prime is 481553406623803. The next prime is 481553406623867. The reversal of 481553406623857 is 758326604355184.

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., 424704460672881 + 56848945950976 = 20608359^2 + 7539824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481553406623857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 481553406623792 and 481553406623801.

It is not a weakly prime, because it can be changed into another prime (481553406623867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240776703311928 + 240776703311929.

It is an arithmetic number, because the mean of its divisors is an integer number (240776703311929).

Almost surely, 2^{481553406623857} is an apocalyptic number.

It is an amenable number.

481553406623857 is a deficient number, since it is larger than the sum of its proper divisors (1).

481553406623857 is an equidigital number, since it uses as much as digits as its factorization.

481553406623857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608000, while the sum is 67.

The spelling of 481553406623857 in words is "four hundred eighty-one trillion, five hundred fifty-three billion, four hundred six million, six hundred twenty-three thousand, eight hundred fifty-seven".