5161881607 has 2 divisors, whose sum is σ = 5161881608. Its totient is φ = 5161881606.

The previous prime is 5161881583. The next prime is 5161881617. The reversal of 5161881607 is 7061881615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5161881607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5161881617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2580940803 + 2580940804.

It is an arithmetic number, because the mean of its divisors is an integer number (2580940804).

Almost surely, 2^5161881607 is an apocalyptic number.

5161881607 is a deficient number, since it is larger than the sum of its proper divisors (1).

5161881607 is an equidigital number, since it uses as much as digits as its factorization.

5161881607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 5161881607 is about 71846.2358582550. The cubic root of 5161881607 is about 1728.2345368482.

It can be divided in two parts, 51618 and 81607, that added together give a square (133225 = 365²).

The spelling of 5161881607 in words is "five billion, one hundred sixty-one million, eight hundred eighty-one thousand, six hundred seven".