67785240780 has 36 divisors (see below), whose sum is σ = 205615230912. Its totient is φ = 18076064160.

The previous prime is 67785240779. The next prime is 67785240821. The reversal of 67785240780 is 8704258776.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188292156 + ... + 188292515.

It is an arithmetic number, because the mean of its divisors is an integer number (5711534192).

Almost surely, 2^67785240780 is an apocalyptic number.

67785240780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67785240780 is an abundant number, since it is smaller than the sum of its proper divisors (137829990132).

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

67785240780 is a wasteful number, since it uses less digits than its factorization.

67785240780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376584686 (or 376584681 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 54.

The spelling of 67785240780 in words is "sixty-seven billion, seven hundred eighty-five million, two hundred forty thousand, seven hundred eighty".