61635454912 has 28 divisors (see below), whose sum is σ = 122658352600. Its totient is φ = 30729413376.

The previous prime is 61635454897. The next prime is 61635454943. The reversal of 61635454912 is 21945453616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357398 + ... + 1402069.

It is an arithmetic number, because the mean of its divisors is an integer number (4380655450).

Almost surely, 2^61635454912 is an apocalyptic number.

It is an amenable number.

61635454912 is a deficient number, since it is larger than the sum of its proper divisors (61022897688).

61635454912 is a wasteful number, since it uses less digits than its factorization.

61635454912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759828 (or 2759818 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The spelling of 61635454912 in words is "sixty-one billion, six hundred thirty-five million, four hundred fifty-four thousand, nine hundred twelve".