61643534022 has 24 divisors (see below), whose sum is σ = 152641132176. Its totient is φ = 17612438256.

The previous prime is 61643534009. The next prime is 61643534033. The reversal of 61643534022 is 22043534616.

61643534022 is a `hidden beast` number, since 6 + 1 + 643 + 5 + 3 + 4 + 0 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244617073 + ... + 244617324.

It is an arithmetic number, because the mean of its divisors is an integer number (6360047174).

Almost surely, 2^61643534022 is an apocalyptic number.

61643534022 is an abundant number, since it is smaller than the sum of its proper divisors (90997598154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61643534022 is a wasteful number, since it uses less digits than its factorization.

61643534022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489234412 (or 489234409 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 61643534022 in words is "sixty-one billion, six hundred forty-three million, five hundred thirty-four thousand, twenty-two".