61031556055444 has 24 divisors (see below), whose sum is σ = 118129685424968. Its totient is φ = 27407102094720.

The previous prime is 61031556055423. The next prime is 61031556055487. The reversal of 61031556055444 is 44455065513016.

It can be written as a sum of positive squares in 4 ways, for example, as 28030989024900 + 33000567030544 = 5294430^2 + 5744612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15860589567 + ... + 15860593414.

Almost surely, 2^{61031556055444} is an apocalyptic number.

It is an amenable number.

61031556055444 is a deficient number, since it is larger than the sum of its proper divisors (57098129369524).

61031556055444 is a wasteful number, since it uses less digits than its factorization.

61031556055444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31721183035 (or 31721183033 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 49.

The spelling of 61031556055444 in words is "sixty-one trillion, thirty-one billion, five hundred fifty-six million, fifty-five thousand, four hundred forty-four".