67642421643201 has 32 divisors (see below), whose sum is σ = 90436240419840. Its totient is φ = 44971972718400.

The previous prime is 67642421643113. The next prime is 67642421643211. The reversal of 67642421643201 is 10234612424676.

It is not a de Polignac number, because 67642421643201 - 2¹⁵ = 67642421610433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67642421643211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7127002066 + ... + 7127011556.

It is an arithmetic number, because the mean of its divisors is an integer number (2826132513120).

Almost surely, 2^{67642421643201} is an apocalyptic number.

It is an amenable number.

67642421643201 is a deficient number, since it is larger than the sum of its proper divisors (22793818776639).

67642421643201 is a wasteful number, since it uses less digits than its factorization.

67642421643201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14037.

The product of its (nonzero) digits is 2322432, while the sum is 48.

The spelling of 67642421643201 in words is "sixty-seven trillion, six hundred forty-two billion, four hundred twenty-one million, six hundred forty-three thousand, two hundred one".