61011050056 has 64 divisors (see below), whose sum is σ = 128056412160. Its totient is φ = 27013224000.

The previous prime is 61011050033. The next prime is 61011050099. The reversal of 61011050056 is 65005011016.

It is a self number, because there is not a number n which added to its sum of digits gives 61011050056.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837741 + ... + 907651.

It is an arithmetic number, because the mean of its divisors is an integer number (2000881440).

Almost surely, 2^61011050056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61011050056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64028206080).

61011050056 is an abundant number, since it is smaller than the sum of its proper divisors (67045362104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61011050056 is a wasteful number, since it uses less digits than its factorization.

61011050056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70186 (or 70182 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The spelling of 61011050056 in words is "sixty-one billion, eleven million, fifty thousand, fifty-six".