61561316222 has 16 divisors (see below), whose sum is σ = 106006935552. Its totient is φ = 26265108600.

The previous prime is 61561316183. The next prime is 61561316237. The reversal of 61561316222 is 22261316516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9856154 + ... + 9862397.

It is an arithmetic number, because the mean of its divisors is an integer number (6625433472).

Almost surely, 2^61561316222 is an apocalyptic number.

61561316222 is a deficient number, since it is larger than the sum of its proper divisors (44445619330).

61561316222 is a wasteful number, since it uses less digits than its factorization.

61561316222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19718783.

The product of its digits is 25920, while the sum is 35.

The spelling of 61561316222 in words is "sixty-one billion, five hundred sixty-one million, three hundred sixteen thousand, two hundred twenty-two".