67851231000 has 512 divisors, whose sum is σ = 248811264000. Its totient is φ = 15387724800.

The previous prime is 67851230989. The next prime is 67851231001. The reversal of 67851231000 is 13215876.

It is a super-2 number, since 2×67851231000² (a number of 22 digits) contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67851231001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 239756859 + ... + 239757141.

It is an arithmetic number, because the mean of its divisors is an integer number (485959500).

Almost surely, 2^67851231000 is an apocalyptic number.

67851231000 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 67851231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124405632000).

67851231000 is an abundant number, since it is smaller than the sum of its proper divisors (180960033000).

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

67851231000 is a wasteful number, since it uses less digits than its factorization.

67851231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

Adding to 67851231000 its reverse (13215876), we get a palindrome (67864446876).

The spelling of 67851231000 in words is "sixty-seven billion, eight hundred fifty-one million, two hundred thirty-one thousand".