61184905943 has 16 divisors (see below), whose sum is σ = 70408800000. Its totient is φ = 52082583552.

The previous prime is 61184905937. The next prime is 61184905973. The reversal of 61184905943 is 34950948116.

It is a cyclic number.

It is not a de Polignac number, because 61184905943 - 2²⁸ = 60916470487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61184905891 and 61184905900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61184905973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931808 + ... + 995306.

It is an arithmetic number, because the mean of its divisors is an integer number (4400550000).

Almost surely, 2^61184905943 is an apocalyptic number.

61184905943 is a deficient number, since it is larger than the sum of its proper divisors (9223894057).

61184905943 is a wasteful number, since it uses less digits than its factorization.

61184905943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64454.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 61184905943 in words is "sixty-one billion, one hundred eighty-four million, nine hundred five thousand, nine hundred forty-three".