61828184917 has 2 divisors, whose sum is σ = 61828184918. Its totient is φ = 61828184916.

The previous prime is 61828184911. The next prime is 61828184921. The reversal of 61828184917 is 71948182816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54976649841 + 6851535076 = 234471^2 + 82774^2 .

It is a cyclic number.

It is not a de Polignac number, because 61828184917 - 2³⁵ = 27468446549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61828184911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30914092458 + 30914092459.

It is an arithmetic number, because the mean of its divisors is an integer number (30914092459).

Almost surely, 2^61828184917 is an apocalyptic number.

It is an amenable number.

61828184917 is a deficient number, since it is larger than the sum of its proper divisors (1).

61828184917 is an equidigital number, since it uses as much as digits as its factorization.

61828184917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 55.

The spelling of 61828184917 in words is "sixty-one billion, eight hundred twenty-eight million, one hundred eighty-four thousand, nine hundred seventeen".