67968154464 has 96 divisors (see below), whose sum is σ = 204359500800. Its totient is φ = 19376136192.

The previous prime is 67968154459. The next prime is 67968154511. The reversal of 67968154464 is 46445186976.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 67968154398 and 67968154407.

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, 189097 + ... + 414359.

It is an arithmetic number, because the mean of its divisors is an integer number (2128744800).

Almost surely, 2^67968154464 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 67968154464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102179750400).

67968154464 is an abundant number, since it is smaller than the sum of its proper divisors (136391346336).

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

67968154464 is a wasteful number, since it uses less digits than its factorization.

67968154464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225732 (or 225724 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 60.

The spelling of 67968154464 in words is "sixty-seven billion, nine hundred sixty-eight million, one hundred fifty-four thousand, four hundred sixty-four".