67791481601 has 4 divisors (see below), whose sum is σ = 67792412592. Its totient is φ = 67790550612.

The previous prime is 67791481591. The next prime is 67791481633. The reversal of 67791481601 is 10618419776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67791481601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67791481601.

It is not an unprimeable number, because it can be changed into a prime (67791481301) 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, 346055 + ... + 505308.

It is an arithmetic number, because the mean of its divisors is an integer number (16948103148).

Almost surely, 2^67791481601 is an apocalyptic number.

It is an amenable number.

67791481601 is a deficient number, since it is larger than the sum of its proper divisors (930991).

67791481601 is an equidigital number, since it uses as much as digits as its factorization.

67791481601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930990.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 67791481601 in words is "sixty-seven billion, seven hundred ninety-one million, four hundred eighty-one thousand, six hundred one".