61544834103 has 16 divisors (see below), whose sum is σ = 87099291360. Its totient is φ = 38521936896.

The previous prime is 61544834101. The next prime is 61544834167. The reversal of 61544834103 is 30143844516.

It is a happy number.

It is not a de Polignac number, because 61544834103 - 2¹ = 61544834101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61544834101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1454400 + ... + 1496117.

It is an arithmetic number, because the mean of its divisors is an integer number (5443705710).

Almost surely, 2^61544834103 is an apocalyptic number.

61544834103 is a deficient number, since it is larger than the sum of its proper divisors (25554457257).

61544834103 is a wasteful number, since it uses less digits than its factorization.

61544834103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950946.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 61544834103 in words is "sixty-one billion, five hundred forty-four million, eight hundred thirty-four thousand, one hundred three".