72744821467 has 4 divisors (see below), whose sum is σ = 72780889336. Its totient is φ = 72708753600.

The previous prime is 72744821449. The next prime is 72744821489. The reversal of 72744821467 is 76412844727.

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 72744821467 - 2²³ = 72736432859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72742821467) 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, 18030909 + ... + 18034942.

It is an arithmetic number, because the mean of its divisors is an integer number (18195222334).

Almost surely, 2^72744821467 is an apocalyptic number.

72744821467 is a deficient number, since it is larger than the sum of its proper divisors (36067869).

72744821467 is a wasteful number, since it uses less digits than its factorization.

72744821467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36067868.

The product of its digits is 4214784, while the sum is 52.

The spelling of 72744821467 in words is "seventy-two billion, seven hundred forty-four million, eight hundred twenty-one thousand, four hundred sixty-seven".