67791481599 has 4 divisors (see below), whose sum is σ = 90388642136. Its totient is φ = 45194321064.

The previous prime is 67791481591. The next prime is 67791481633. The reversal of 67791481599 is 99518419776.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 67791481599 - 2³ = 67791481591 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 (67791481591) 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, 11298580264 + ... + 11298580269.

It is an arithmetic number, because the mean of its divisors is an integer number (22597160534).

Almost surely, 2^67791481599 is an apocalyptic number.

67791481599 is a deficient number, since it is larger than the sum of its proper divisors (22597160537).

67791481599 is a wasteful number, since it uses less digits than its factorization.

67791481599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22597160536.

The product of its digits is 34292160, while the sum is 66.

The spelling of 67791481599 in words is "sixty-seven billion, seven hundred ninety-one million, four hundred eighty-one thousand, five hundred ninety-nine".