61444724056 has 16 divisors (see below), whose sum is σ = 115260255000. Its totient is φ = 30708656064.

The previous prime is 61444724041. The next prime is 61444724111. The reversal of 61444724056 is 65042744416.

It is a super-2 number, since 2×61444724056² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694181 + ... + 1730068.

Almost surely, 2^61444724056 is an apocalyptic number.

It is an amenable number.

61444724056 is a deficient number, since it is larger than the sum of its proper divisors (53815530944).

61444724056 is a wasteful number, since it uses less digits than its factorization.

61444724056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426498 (or 3426494 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 61444724056 in words is "sixty-one billion, four hundred forty-four million, seven hundred twenty-four thousand, fifty-six".