61064968212 has 72 divisors (see below), whose sum is σ = 156973471200. Its totient is φ = 20011387968.

The previous prime is 61064968189. The next prime is 61064968219. The reversal of 61064968212 is 21286946016.

61064968212 is a `hidden beast` number, since 610 + 6 + 4 + 9 + 6 + 8 + 21 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61064968219) 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 23 ways as a sum of consecutive naturals, for example, 1202839 + ... + 1252577.

It is an arithmetic number, because the mean of its divisors is an integer number (2180187100).

Almost surely, 2^61064968212 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 61064968212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78486735600).

61064968212 is an abundant number, since it is smaller than the sum of its proper divisors (95908502988).

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

61064968212 is a wasteful number, since it uses less digits than its factorization.

61064968212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50325 (or 50320 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 61064968212 in words is "sixty-one billion, sixty-four million, nine hundred sixty-eight thousand, two hundred twelve".