61043252656 has 40 divisors (see below), whose sum is σ = 125485852320. Its totient is φ = 28667188224.

The previous prime is 61043252629. The next prime is 61043252681. The reversal of 61043252656 is 65625234016.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 97951 + ... + 362878.

It is an arithmetic number, because the mean of its divisors is an integer number (3137146308).

Almost surely, 2^61043252656 is an apocalyptic number.

It is an amenable number.

61043252656 is an abundant number, since it is smaller than the sum of its proper divisors (64442599664).

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

61043252656 is a wasteful number, since it uses less digits than its factorization.

61043252656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461341 (or 461335 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 61043252656 in words is "sixty-one billion, forty-three million, two hundred fifty-two thousand, six hundred fifty-six".