61668688922 has 8 divisors (see below), whose sum is σ = 92592584436. Its totient is φ = 30804494112.

The previous prime is 61668688919. The next prime is 61668688933. The reversal of 61668688922 is 22988686616.

It can be written as a sum of positive squares in 2 ways, for example, as 60545031481 + 1123657441 = 246059^2 + 33521^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14922593 + ... + 14926724.

Almost surely, 2^61668688922 is an apocalyptic number.

61668688922 is a deficient number, since it is larger than the sum of its proper divisors (30923895514).

61668688922 is a wasteful number, since it uses less digits than its factorization.

61668688922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29850352.

The product of its digits is 23887872, while the sum is 62.

The spelling of 61668688922 in words is "sixty-one billion, six hundred sixty-eight million, six hundred eighty-eight thousand, nine hundred twenty-two".