72644124273067 has 4 divisors (see below), whose sum is σ = 73323041322456. Its totient is φ = 71965207223680.

The previous prime is 72644124273053. The next prime is 72644124273143. The reversal of 72644124273067 is 76037242144627.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72644124273067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72644124272999 and 72644124273017.

It is not an unprimeable number, because it can be changed into a prime (72644124273047) 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, 339458524534 + ... + 339458524747.

It is an arithmetic number, because the mean of its divisors is an integer number (18330760330614).

Almost surely, 2^{72644124273067} is an apocalyptic number.

72644124273067 is a deficient number, since it is larger than the sum of its proper divisors (678917049389).

72644124273067 is a wasteful number, since it uses less digits than its factorization.

72644124273067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678917049388.

The product of its (nonzero) digits is 18966528, while the sum is 55.

The spelling of 72644124273067 in words is "seventy-two trillion, six hundred forty-four billion, one hundred twenty-four million, two hundred seventy-three thousand, sixty-seven".