477025997681 has 2 divisors, whose sum is σ = 477025997682. Its totient is φ = 477025997680.

The previous prime is 477025997663. The next prime is 477025997689. The reversal of 477025997681 is 186799520774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 465136276081 + 11889721600 = 682009^2 + 109040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-477025997681 is a prime.

It is a super-2 number, since 2×477025997681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (477025997689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238512998840 + 238512998841.

It is an arithmetic number, because the mean of its divisors is an integer number (238512998841).

Almost surely, 2^477025997681 is an apocalyptic number.

It is an amenable number.

477025997681 is a deficient number, since it is larger than the sum of its proper divisors (1).

477025997681 is an equidigital number, since it uses as much as digits as its factorization.

477025997681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53343360, while the sum is 65.

The spelling of 477025997681 in words is "four hundred seventy-seven billion, twenty-five million, nine hundred ninety-seven thousand, six hundred eighty-one".