61782704016 has 80 divisors (see below), whose sum is σ = 183278864640. Its totient is φ = 17736658560.

The previous prime is 61782703991. The next prime is 61782704057. The reversal of 61782704016 is 61040728716.

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 15 ways as a sum of consecutive naturals, for example, 3069250 + ... + 3089313.

It is an arithmetic number, because the mean of its divisors is an integer number (2290985808).

Almost surely, 2^61782704016 is an apocalyptic number.

61782704016 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61782704016 is an abundant number, since it is smaller than the sum of its proper divisors (121496160624).

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

61782704016 is a wasteful number, since it uses less digits than its factorization.

61782704016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6158604 (or 6158598 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 61782704016 in words is "sixty-one billion, seven hundred eighty-two million, seven hundred four thousand, sixteen".