67171152220641 has 96 divisors (see below), whose sum is σ = 121027082342400. Its totient is φ = 35026588251648.

The previous prime is 67171152220639. The next prime is 67171152220723. The reversal of 67171152220641 is 14602225117176.

67171152220641 is a `hidden beast` number, since 6 + 71 + 7 + 11 + 522 + 2 + 0 + 6 + 41 = 666.

It is not a de Polignac number, because 67171152220641 - 2¹ = 67171152220639 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67171150220641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 849591 + ... + 11621708.

It is an arithmetic number, because the mean of its divisors is an integer number (1260698774400).

Almost surely, 2^{67171152220641} is an apocalyptic number.

It is an amenable number.

67171152220641 is a deficient number, since it is larger than the sum of its proper divisors (53855930121759).

67171152220641 is a wasteful number, since it uses less digits than its factorization.

67171152220641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12471483 (or 12471480 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 67171152220641 in words is "sixty-seven trillion, one hundred seventy-one billion, one hundred fifty-two million, two hundred twenty thousand, six hundred forty-one".