67455681448 has 8 divisors (see below), whose sum is σ = 126479402730. Its totient is φ = 33727840720.

The previous prime is 67455681431. The next prime is 67455681481. The reversal of 67455681448 is 84418655476.

It can be written as a sum of positive squares in only one way, i.e., 55263546724 + 12192134724 = 235082^2 + 110418^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×67455681448² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67455681392 and 67455681401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4215980083 + ... + 4215980098.

Almost surely, 2^67455681448 is an apocalyptic number.

It is an amenable number.

67455681448 is a deficient number, since it is larger than the sum of its proper divisors (59023721282).

67455681448 is a wasteful number, since it uses less digits than its factorization.

67455681448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8431960187 (or 8431960183 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 58.

The spelling of 67455681448 in words is "sixty-seven billion, four hundred fifty-five million, six hundred eighty-one thousand, four hundred forty-eight".