61104454471 has 2 divisors, whose sum is σ = 61104454472. Its totient is φ = 61104454470.

The previous prime is 61104454409. The next prime is 61104454487. The reversal of 61104454471 is 17445440116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61104454471 - 2²⁵ = 61070900039 is a prime.

It is a super-3 number, since 3×61104454471³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61104454471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61104554471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30552227235 + 30552227236.

It is an arithmetic number, because the mean of its divisors is an integer number (30552227236).

Almost surely, 2^61104454471 is an apocalyptic number.

61104454471 is a deficient number, since it is larger than the sum of its proper divisors (1).

61104454471 is an equidigital number, since it uses as much as digits as its factorization.

61104454471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

Adding to 61104454471 its reverse (17445440116), we get a palindrome (78549894587).

The spelling of 61104454471 in words is "sixty-one billion, one hundred four million, four hundred fifty-four thousand, four hundred seventy-one".