81932335467 has 4 divisors (see below), whose sum is σ = 109243113960. Its totient is φ = 54621556976.

The previous prime is 81932335451. The next prime is 81932335469. The reversal of 81932335467 is 76453323918.

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

It is a cyclic number.

It is not a de Polignac number, because 81932335467 - 2⁴ = 81932335451 is a prime.

It is a super-2 number, since 2×81932335467² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81932335469) 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, 13655389242 + ... + 13655389247.

It is an arithmetic number, because the mean of its divisors is an integer number (27310778490).

Almost surely, 2^81932335467 is an apocalyptic number.

81932335467 is a deficient number, since it is larger than the sum of its proper divisors (27310778493).

81932335467 is a wasteful number, since it uses less digits than its factorization.

81932335467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27310778492.

The product of its digits is 3265920, while the sum is 51.

The spelling of 81932335467 in words is "eighty-one billion, nine hundred thirty-two million, three hundred thirty-five thousand, four hundred sixty-seven".