67665756499980 has 24 divisors (see below), whose sum is σ = 189464118200112. Its totient is φ = 18044201733312.

The previous prime is 67665756499937. The next prime is 67665756500051. The reversal of 67665756499980 is 8999465756676.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563881304107 + ... + 563881304226.

It is an arithmetic number, because the mean of its divisors is an integer number (7894338258338).

Almost surely, 2^{67665756499980} is an apocalyptic number.

67665756499980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67665756499980 is an abundant number, since it is smaller than the sum of its proper divisors (121798361700132).

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

67665756499980 is a wasteful number, since it uses less digits than its factorization.

67665756499980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127762608345 (or 1127762608343 counting only the distinct ones).

The product of its (nonzero) digits is 37035532800, while the sum is 87.

The spelling of 67665756499980 in words is "sixty-seven trillion, six hundred sixty-five billion, seven hundred fifty-six million, four hundred ninety-nine thousand, nine hundred eighty".