61788053534039 has 16 divisors (see below), whose sum is σ = 74331845306880. Its totient is φ = 50173519932000.

The previous prime is 61788053533961. The next prime is 61788053534087. The reversal of 61788053534039 is 93043535088716.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61788053534039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61788053534089) 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, 30449414 + ... + 32415164.

It is an arithmetic number, because the mean of its divisors is an integer number (4645740331680).

Almost surely, 2^{61788053534039} is an apocalyptic number.

61788053534039 is a deficient number, since it is larger than the sum of its proper divisors (12543791772841).

61788053534039 is a wasteful number, since it uses less digits than its factorization.

61788053534039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202110.

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 61788053534039 in words is "sixty-one trillion, seven hundred eighty-eight billion, fifty-three million, five hundred thirty-four thousand, thirty-nine".