67451408640001 has 4 divisors (see below), whose sum is σ = 67451438408404. Its totient is φ = 67451378871600.

The previous prime is 67451408639977. The next prime is 67451408640029. The reversal of 67451408640001 is 10004680415476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7170532506225 + 60280876133776 = 2677785^2 + 7764076^2 .

It is a cyclic number.

It is not a de Polignac number, because 67451408640001 - 2¹³ = 67451408631809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67451408640701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11177730 + ... + 16119691.

It is an arithmetic number, because the mean of its divisors is an integer number (16862859602101).

Almost surely, 2^{67451408640001} is an apocalyptic number.

It is an amenable number.

67451408640001 is a deficient number, since it is larger than the sum of its proper divisors (29768403).

67451408640001 is a wasteful number, since it uses less digits than its factorization.

67451408640001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29768402.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 67451408640001 in words is "sixty-seven trillion, four hundred fifty-one billion, four hundred eight million, six hundred forty thousand, one".