67787283720 has 128 divisors (see below), whose sum is σ = 219542601600. Its totient is φ = 16645146624.

The previous prime is 67787283719. The next prime is 67787283721. The reversal of 67787283720 is 2738278776.

It is an interprime number because it is at equal distance from previous prime (67787283719) and next prime (67787283721).

It is not an unprimeable number, because it can be changed into a prime (67787283721) 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, 584919 + ... + 691161.

It is an arithmetic number, because the mean of its divisors is an integer number (1715176575).

Almost surely, 2^67787283720 is an apocalyptic number.

67787283720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67787283720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109771300800).

67787283720 is an abundant number, since it is smaller than the sum of its proper divisors (151755317880).

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

67787283720 is a wasteful number, since it uses less digits than its factorization.

67787283720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106679 (or 106675 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 57.

The spelling of 67787283720 in words is "sixty-seven billion, seven hundred eighty-seven million, two hundred eighty-three thousand, seven hundred twenty".