4671637681 has 2 divisors, whose sum is σ = 4671637682. Its totient is φ = 4671637680.

The previous prime is 4671637669. The next prime is 4671637697. The reversal of 4671637681 is 1867361764.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4467719281 + 203918400 = 66841^2 + 14280^2 .

It is a cyclic number.

It is not a de Polignac number, because 4671637681 - 2¹³ = 4671629489 is a prime.

It is a super-2 number, since 2×4671637681² = 43648397245078115522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4671637631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2335818840 + 2335818841.

It is an arithmetic number, because the mean of its divisors is an integer number (2335818841).

Almost surely, 2^4671637681 is an apocalyptic number.

It is an amenable number.

4671637681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4671637681 is an equidigital number, since it uses as much as digits as its factorization.

4671637681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 4671637681 is about 68349.3795216899. The cubic root of 4671637681 is about 1671.6924624240.

The spelling of 4671637681 in words is "four billion, six hundred seventy-one million, six hundred thirty-seven thousand, six hundred eighty-one".