67272473664 has 168 divisors, whose sum is σ = 211459023360. Its totient is φ = 20278502400.

The previous prime is 67272473641. The next prime is 67272473687. The reversal of 67272473664 is 46637427276.

67272473664 is a `hidden beast` number, since 6 + 7 + 272 + 4 + 7 + 366 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (67272473641) and next prime (67272473687).

It is a self number, because there is not a number n which added to its sum of digits gives 67272473664.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1182382 + ... + 1237970.

Almost surely, 2^67272473664 is an apocalyptic number.

67272473664 is a gapful number since it is divisible by the number (64) 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 67272473664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105729511680).

67272473664 is an abundant number, since it is smaller than the sum of its proper divisors (144186549696).

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

67272473664 is a wasteful number, since it uses less digits than its factorization.

67272473664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55809 (or 55796 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 54.

The spelling of 67272473664 in words is "sixty-seven billion, two hundred seventy-two million, four hundred seventy-three thousand, six hundred sixty-four".