67641553451063 has 8 divisors (see below), whose sum is σ = 68249435218656. Its totient is φ = 67033834560000.

The previous prime is 67641553451033. The next prime is 67641553451083. The reversal of 67641553451063 is 36015435514676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67641553451063 - 2²² = 67641549256759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67641553451033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39884738 + ... + 41546063.

It is an arithmetic number, because the mean of its divisors is an integer number (8531179402332).

Almost surely, 2^{67641553451063} is an apocalyptic number.

67641553451063 is a deficient number, since it is larger than the sum of its proper divisors (607881767593).

67641553451063 is a wasteful number, since it uses less digits than its factorization.

67641553451063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81438265.

The product of its (nonzero) digits is 27216000, while the sum is 56.

The spelling of 67641553451063 in words is "sixty-seven trillion, six hundred forty-one billion, five hundred fifty-three million, four hundred fifty-one thousand, sixty-three".