61542456044534 has 32 divisors (see below), whose sum is σ = 97093068470784. Its totient is φ = 29200261970880.

The previous prime is 61542456044533. The next prime is 61542456044549. The reversal of 61542456044534 is 43544065424516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61542456044533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7090874 + ... + 13166829.

It is an arithmetic number, because the mean of its divisors is an integer number (3034158389712).

Almost surely, 2^{61542456044534} is an apocalyptic number.

61542456044534 is a deficient number, since it is larger than the sum of its proper divisors (35550612426250).

61542456044534 is a wasteful number, since it uses less digits than its factorization.

61542456044534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20258252.

The product of its (nonzero) digits is 27648000, while the sum is 53.

The spelling of 61542456044534 in words is "sixty-one trillion, five hundred forty-two billion, four hundred fifty-six million, forty-four thousand, five hundred thirty-four".