61466563543444 has 12 divisors (see below), whose sum is σ = 108571780465344. Its totient is φ = 30446054839064.

The previous prime is 61466563543409. The next prime is 61466563543481. The reversal of 61466563543444 is 44434536566416.

It is a happy number.

It is a super-2 number, since 2×61466563543444² (a number of 28 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, 71806732684 + ... + 71806733539.

It is an arithmetic number, because the mean of its divisors is an integer number (9047648372112).

Almost surely, 2^{61466563543444} is an apocalyptic number.

It is an amenable number.

61466563543444 is a deficient number, since it is larger than the sum of its proper divisors (47105216921900).

61466563543444 is a wasteful number, since it uses less digits than its factorization.

61466563543444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143613466334 (or 143613466332 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 61.

The spelling of 61466563543444 in words is "sixty-one trillion, four hundred sixty-six billion, five hundred sixty-three million, five hundred forty-three thousand, four hundred forty-four".