61055620456 has 8 divisors (see below), whose sum is σ = 114479288370. Its totient is φ = 30527810224.

The previous prime is 61055620447. The next prime is 61055620481. The reversal of 61055620456 is 65402655016.

It can be written as a sum of positive squares in only one way, i.e., 60147562500 + 908057956 = 245250^2 + 30134^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3815976271 + ... + 3815976286.

Almost surely, 2^61055620456 is an apocalyptic number.

It is an amenable number.

61055620456 is a deficient number, since it is larger than the sum of its proper divisors (53423667914).

61055620456 is a wasteful number, since it uses less digits than its factorization.

61055620456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631952563 (or 7631952559 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 61055620456 in words is "sixty-one billion, fifty-five million, six hundred twenty thousand, four hundred fifty-six".