61744573438 has 16 divisors (see below), whose sum is σ = 96312188160. Its totient is φ = 29651658400.

The previous prime is 61744573421. The next prime is 61744573439. The reversal of 61744573438 is 83437544716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61744573439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2775733 + ... + 2797888.

It is an arithmetic number, because the mean of its divisors is an integer number (6019511760).

Almost surely, 2^61744573438 is an apocalyptic number.

61744573438 is a deficient number, since it is larger than the sum of its proper divisors (34567614722).

61744573438 is a wasteful number, since it uses less digits than its factorization.

61744573438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573843.

The product of its digits is 6773760, while the sum is 52.

The spelling of 61744573438 in words is "sixty-one billion, seven hundred forty-four million, five hundred seventy-three thousand, four hundred thirty-eight".