61728389094 has 8 divisors (see below), whose sum is σ = 123456778200. Its totient is φ = 20576129696.

The previous prime is 61728388991. The next prime is 61728389123. The reversal of 61728389094 is 49098382716.

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

61728389094 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5144032419 + ... + 5144032430.

It is an arithmetic number, because the mean of its divisors is an integer number (15432097275).

Almost surely, 2^61728389094 is an apocalyptic number.

61728389094 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61728389094 is a wasteful number, since it uses less digits than its factorization.

61728389094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10288064854.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 61728389094 in words is "sixty-one billion, seven hundred twenty-eight million, three hundred eighty-nine thousand, ninety-four".