61222784012 has 24 divisors (see below), whose sum is σ = 122168543616. Its totient is φ = 26594512128.

The previous prime is 61222784011. The next prime is 61222784023. The reversal of 61222784012 is 21048722216.

It is a super-2 number, since 2×61222784012² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61222784011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34627388 + ... + 34629155.

It is an arithmetic number, because the mean of its divisors is an integer number (5090355984).

Almost surely, 2^61222784012 is an apocalyptic number.

It is an amenable number.

61222784012 is a deficient number, since it is larger than the sum of its proper divisors (60945759604).

61222784012 is a wasteful number, since it uses less digits than its factorization.

61222784012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69256577 (or 69256575 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The spelling of 61222784012 in words is "sixty-one billion, two hundred twenty-two million, seven hundred eighty-four thousand, twelve".