67347788420 has 96 divisors (see below), whose sum is σ = 155542464000. Its totient is φ = 24291417600.

The previous prime is 67347788419. The next prime is 67347788423. The reversal of 67347788420 is 2488774376.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (67347788423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40351346 + ... + 40353014.

It is an arithmetic number, because the mean of its divisors is an integer number (1620234000).

Almost surely, 2^67347788420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67347788420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77771232000).

67347788420 is an abundant number, since it is smaller than the sum of its proper divisors (88194675580).

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

67347788420 is a wasteful number, since it uses less digits than its factorization.

67347788420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3069 (or 3067 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 56.

The spelling of 67347788420 in words is "sixty-seven billion, three hundred forty-seven million, seven hundred eighty-eight thousand, four hundred twenty".