408224899961 has 2 divisors, whose sum is σ = 408224899962. Its totient is φ = 408224899960.

The previous prime is 408224899949. The next prime is 408224899997. The reversal of 408224899961 is 169998422804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390055207936 + 18169692025 = 624544^2 + 134795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408224899961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 408224899894 and 408224899903.

It is not a weakly prime, because it can be changed into another prime (408224899261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204112449980 + 204112449981.

It is an arithmetic number, because the mean of its divisors is an integer number (204112449981).

Almost surely, 2^408224899961 is an apocalyptic number.

It is an amenable number.

408224899961 is a deficient number, since it is larger than the sum of its proper divisors (1).

408224899961 is an equidigital number, since it uses as much as digits as its factorization.

408224899961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17915904, while the sum is 62.

The spelling of 408224899961 in words is "four hundred eight billion, two hundred twenty-four million, eight hundred ninety-nine thousand, nine hundred sixty-one".