61565400022 has 8 divisors (see below), whose sum is σ = 105540685776. Its totient is φ = 26385171432.

The previous prime is 61565400011. The next prime is 61565400049. The reversal of 61565400022 is 22000456516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2198764273 + ... + 2198764300.

It is an arithmetic number, because the mean of its divisors is an integer number (13192585722).

Almost surely, 2^61565400022 is an apocalyptic number.

61565400022 is a deficient number, since it is larger than the sum of its proper divisors (43975285754).

61565400022 is a wasteful number, since it uses less digits than its factorization.

61565400022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397528582.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 61565400022 its reverse (22000456516), we get a palindrome (83565856538).

The spelling of 61565400022 in words is "sixty-one billion, five hundred sixty-five million, four hundred thousand, twenty-two".