474149606681 has 2 divisors, whose sum is σ = 474149606682. Its totient is φ = 474149606680.

The previous prime is 474149606669. The next prime is 474149606743. The reversal of 474149606681 is 186606941474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416875544281 + 57274062400 = 645659^2 + 239320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-474149606681 is a prime.

It is a super-2 number, since 2×474149606681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (474149600681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237074803340 + 237074803341.

It is an arithmetic number, because the mean of its divisors is an integer number (237074803341).

Almost surely, 2^474149606681 is an apocalyptic number.

It is an amenable number.

474149606681 is a deficient number, since it is larger than the sum of its proper divisors (1).

474149606681 is an equidigital number, since it uses as much as digits as its factorization.

474149606681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 474149606681 in words is "four hundred seventy-four billion, one hundred forty-nine million, six hundred six thousand, six hundred eighty-one".