4611553861 has 2 divisors, whose sum is σ = 4611553862. Its totient is φ = 4611553860.

The previous prime is 4611553829. The next prime is 4611553901. The reversal of 4611553861 is 1683551164.

It is an a-pointer prime, because the next prime (4611553901) can be obtained adding 4611553861 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4571788225 + 39765636 = 67615^2 + 6306^2 .

It is a cyclic number.

It is not a de Polignac number, because 4611553861 - 2⁵ = 4611553829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4611553561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2305776930 + 2305776931.

It is an arithmetic number, because the mean of its divisors is an integer number (2305776931).

Almost surely, 2^4611553861 is an apocalyptic number.

It is an amenable number.

4611553861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4611553861 is an equidigital number, since it uses as much as digits as its factorization.

4611553861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 40.

The square root of 4611553861 is about 67908.4226072142. The cubic root of 4611553861 is about 1664.4947453152.

The spelling of 4611553861 in words is "four billion, six hundred eleven million, five hundred fifty-three thousand, eight hundred sixty-one".