67667376456 has 128 divisors (see below), whose sum is σ = 196183814400. Its totient is φ = 21590300160.

The previous prime is 67667376421. The next prime is 67667376463. The reversal of 67667376456 is 65467376676.

It is a junction number, because it is equal to n+sod(n) for n = 67667376393 and 67667376402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397285 + ... + 541451.

It is an arithmetic number, because the mean of its divisors is an integer number (1532686050).

Almost surely, 2^67667376456 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 67667376456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98091907200).

67667376456 is an abundant number, since it is smaller than the sum of its proper divisors (128516437944).

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

67667376456 is a wasteful number, since it uses less digits than its factorization.

67667376456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144276 (or 144266 counting only the distinct ones).

The product of its digits is 160030080, while the sum is 63.

The spelling of 67667376456 in words is "sixty-seven billion, six hundred sixty-seven million, three hundred seventy-six thousand, four hundred fifty-six".