67776099840 has 160 divisors (see below), whose sum is σ = 240746600160. Its totient is φ = 18073608192.

The previous prime is 67776099823. The next prime is 67776099841. The reversal of 67776099840 is 4899067776.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67776099841) by changing a digit.

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, 421159 + ... + 559398.

It is an arithmetic number, because the mean of its divisors is an integer number (1504666251).

Almost surely, 2^67776099840 is an apocalyptic number.

67776099840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67776099840 is an abundant number, since it is smaller than the sum of its proper divisors (172970500320).

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

67776099840 is an equidigital number, since it uses as much as digits as its factorization.

67776099840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980589 (or 980567 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 63.

The spelling of 67776099840 in words is "sixty-seven billion, seven hundred seventy-six million, ninety-nine thousand, eight hundred forty".