67778525304 has 64 divisors (see below), whose sum is σ = 215169926400. Its totient is φ = 19365292512.

The previous prime is 67778525281. The next prime is 67778525323. The reversal of 67778525304 is 40352587776.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22412022 + ... + 22415045.

It is an arithmetic number, because the mean of its divisors is an integer number (3362030100).

Almost surely, 2^67778525304 is an apocalyptic number.

It is an amenable number.

67778525304 is an abundant number, since it is smaller than the sum of its proper divisors (147391401096).

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

67778525304 is a wasteful number, since it uses less digits than its factorization.

67778525304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44827089 (or 44827079 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 54.

The spelling of 67778525304 in words is "sixty-seven billion, seven hundred seventy-eight million, five hundred twenty-five thousand, three hundred four".