61220164334 has 16 divisors (see below), whose sum is σ = 104956735488. Its totient is φ = 26235242712.

The previous prime is 61220164319. The next prime is 61220164361. The reversal of 61220164334 is 43346102216.

It is a self number, because there is not a number n which added to its sum of digits gives 61220164334.

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, 37379 + ... + 351905.

It is an arithmetic number, because the mean of its divisors is an integer number (6559795968).

Almost surely, 2^61220164334 is an apocalyptic number.

61220164334 is a deficient number, since it is larger than the sum of its proper divisors (43736571154).

61220164334 is a wasteful number, since it uses less digits than its factorization.

61220164334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328439.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 61220164334 in words is "sixty-one billion, two hundred twenty million, one hundred sixty-four thousand, three hundred thirty-four".