61641554422 has 16 divisors (see below), whose sum is σ = 111232880640. Its totient is φ = 25027397928.

The previous prime is 61641554419. The next prime is 61641554459. The reversal of 61641554422 is 22445514616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115867318 + ... + 115867849.

It is an arithmetic number, because the mean of its divisors is an integer number (6952055040).

Almost surely, 2^61641554422 is an apocalyptic number.

61641554422 is a deficient number, since it is larger than the sum of its proper divisors (49591326218).

61641554422 is a wasteful number, since it uses less digits than its factorization.

61641554422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231735195.

The product of its digits is 230400, while the sum is 40.

The spelling of 61641554422 in words is "sixty-one billion, six hundred forty-one million, five hundred fifty-four thousand, four hundred twenty-two".