61050066064 has 80 divisors (see below), whose sum is σ = 128792145664. Its totient is φ = 27866073600.

The previous prime is 61050066061. The next prime is 61050066079. The reversal of 61050066064 is 46066005016.

It is a super-2 number, since 2×61050066064² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61050066061) by changing a digit.

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, 21872509 + ... + 21875299.

Almost surely, 2^61050066064 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 61050066064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64396072832).

61050066064 is an abundant number, since it is smaller than the sum of its proper divisors (67742079600).

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

61050066064 is a wasteful number, since it uses less digits than its factorization.

61050066064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936 (or 3930 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 61050066064 in words is "sixty-one billion, fifty million, sixty-six thousand, sixty-four".