67421360473 has 4 divisors (see below), whose sum is σ = 68693461668. Its totient is φ = 66149259280.

The previous prime is 67421360459. The next prime is 67421360527. The reversal of 67421360473 is 37406312476.

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 16278442569 + 51142917904 = 127587^2 + 226148^2 .

It is a cyclic number.

It is not a de Polignac number, because 67421360473 - 2⁵ = 67421360441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67421360453) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 636050518 + ... + 636050623.

It is an arithmetic number, because the mean of its divisors is an integer number (17173365417).

Almost surely, 2^67421360473 is an apocalyptic number.

It is an amenable number.

67421360473 is a deficient number, since it is larger than the sum of its proper divisors (1272101195).

67421360473 is a wasteful number, since it uses less digits than its factorization.

67421360473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272101194.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 67421360473 in words is "sixty-seven billion, four hundred twenty-one million, three hundred sixty thousand, four hundred seventy-three".