61110561603 has 16 divisors (see below), whose sum is σ = 100283998976. Its totient is φ = 32234142240.

The previous prime is 61110561599. The next prime is 61110561619. The reversal of 61110561603 is 30616501116.

It is not a de Polignac number, because 61110561603 - 2² = 61110561599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61110561653) 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, 111923833 + ... + 111924378.

It is an arithmetic number, because the mean of its divisors is an integer number (6267749936).

Almost surely, 2^61110561603 is an apocalyptic number.

61110561603 is a deficient number, since it is larger than the sum of its proper divisors (39173437373).

61110561603 is a wasteful number, since it uses less digits than its factorization.

61110561603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223848234.

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 61110561603 in words is "sixty-one billion, one hundred ten million, five hundred sixty-one thousand, six hundred three".