61546131656 has 16 divisors (see below), whose sum is σ = 115543800540. Its totient is φ = 30734451520.

The previous prime is 61546131617. The next prime is 61546131659. The reversal of 61546131656 is 65613164516.

61546131656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 61124650756 + 421480900 = 247234^2 + 20530^2 .

It is not an unprimeable number, because it can be changed into a prime (61546131659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4820015 + ... + 4832766.

Almost surely, 2^61546131656 is an apocalyptic number.

It is an amenable number.

61546131656 is a deficient number, since it is larger than the sum of its proper divisors (53997668884).

61546131656 is a wasteful number, since it uses less digits than its factorization.

61546131656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9653584 (or 9653580 counting only the distinct ones).

The product of its digits is 388800, while the sum is 44.

The spelling of 61546131656 in words is "sixty-one billion, five hundred forty-six million, one hundred thirty-one thousand, six hundred fifty-six".