61544813594 has 24 divisors (see below), whose sum is σ = 102645833472. Its totient is φ = 27447059120.

The previous prime is 61544813587. The next prime is 61544813599. The reversal of 61544813594 is 49531844516.

It is not an unprimeable number, because it can be changed into a prime (61544813599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436154 + ... + 559749.

It is an arithmetic number, because the mean of its divisors is an integer number (4276909728).

Almost surely, 2^61544813594 is an apocalyptic number.

61544813594 is a deficient number, since it is larger than the sum of its proper divisors (41101019878).

61544813594 is a wasteful number, since it uses less digits than its factorization.

61544813594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996022 (or 995969 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 50.

The spelling of 61544813594 in words is "sixty-one billion, five hundred forty-four million, eight hundred thirteen thousand, five hundred ninety-four".