61536545005643 has 8 divisors (see below), whose sum is σ = 62215345209600. Its totient is φ = 60859665029800.

The previous prime is 61536545005601. The next prime is 61536545005679. The reversal of 61536545005643 is 34650054563516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61536545005643 - 2⁴⁴ = 43944358961227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61536545005843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479992583 + ... + 480120768.

It is an arithmetic number, because the mean of its divisors is an integer number (7776918151200).

Almost surely, 2^{61536545005643} is an apocalyptic number.

61536545005643 is a deficient number, since it is larger than the sum of its proper divisors (678800203957).

61536545005643 is a wasteful number, since it uses less digits than its factorization.

61536545005643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960114057.

The product of its (nonzero) digits is 19440000, while the sum is 53.

The spelling of 61536545005643 in words is "sixty-one trillion, five hundred thirty-six billion, five hundred forty-five million, five thousand, six hundred forty-three".