67781006452 has 12 divisors (see below), whose sum is σ = 118621994400. Its totient is φ = 33889008056.

The previous prime is 67781006411. The next prime is 67781006477. The reversal of 67781006452 is 25460018776.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268498 + ... + 455689.

It is an arithmetic number, because the mean of its divisors is an integer number (9885166200).

Almost surely, 2^67781006452 is an apocalyptic number.

It is an amenable number.

67781006452 is a deficient number, since it is larger than the sum of its proper divisors (50840987948).

67781006452 is a wasteful number, since it uses less digits than its factorization.

67781006452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747590 (or 747588 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 67781006452 in words is "sixty-seven billion, seven hundred eighty-one million, six thousand, four hundred fifty-two".