473458505981 has 2 divisors, whose sum is σ = 473458505982. Its totient is φ = 473458505980.

The previous prime is 473458505977. The next prime is 473458506047. The reversal of 473458505981 is 189505854374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251366863225 + 222091642756 = 501365^2 + 471266^2 .

It is a cyclic number.

It is not a de Polignac number, because 473458505981 - 2² = 473458505977 is a prime.

It is a super-2 number, since 2×473458505981² (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 473458505981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (473458565981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236729252990 + 236729252991.

It is an arithmetic number, because the mean of its divisors is an integer number (236729252991).

Almost surely, 2^473458505981 is an apocalyptic number.

It is an amenable number.

473458505981 is a deficient number, since it is larger than the sum of its proper divisors (1).

473458505981 is an equidigital number, since it uses as much as digits as its factorization.

473458505981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192000, while the sum is 59.

The spelling of 473458505981 in words is "four hundred seventy-three billion, four hundred fifty-eight million, five hundred five thousand, nine hundred eighty-one".