61020856576 has 27 divisors (see below), whose sum is σ = 121811240271. Its totient is φ = 30508452096.

The previous prime is 61020856573. The next prime is 61020856591. The reversal of 61020856576 is 67565802016.

The square root of 61020856576 is 247024.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61020856573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3944665 + ... + 3960103.

Almost surely, 2^61020856576 is an apocalyptic number.

61020856576 is the 247024-th square number.

It is an amenable number.

61020856576 is a deficient number, since it is larger than the sum of its proper divisors (60790383695).

61020856576 is an frugal number, since it uses more digits than its factorization.

61020856576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30894 (or 15441 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 61020856576 in words is "sixty-one billion, twenty million, eight hundred fifty-six thousand, five hundred seventy-six".