61788489045 has 8 divisors (see below), whose sum is σ = 98861582496. Its totient is φ = 32953860816.

The previous prime is 61788489013. The next prime is 61788489083. The reversal of 61788489045 is 54098488716.

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

It is not a de Polignac number, because 61788489045 - 2⁵ = 61788489013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61788489045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2059616287 + ... + 2059616316.

It is an arithmetic number, because the mean of its divisors is an integer number (12357697812).

Almost surely, 2^61788489045 is an apocalyptic number.

It is an amenable number.

61788489045 is a deficient number, since it is larger than the sum of its proper divisors (37073093451).

61788489045 is a wasteful number, since it uses less digits than its factorization.

61788489045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119232611.

The product of its (nonzero) digits is 15482880, while the sum is 60.

The spelling of 61788489045 in words is "sixty-one billion, seven hundred eighty-eight million, four hundred eighty-nine thousand, forty-five".