73218667418771 has 4 divisors (see below), whose sum is σ = 83678477050032. Its totient is φ = 62758857787512.

The previous prime is 73218667418737. The next prime is 73218667418791. The reversal of 73218667418771 is 17781476681237.

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 73218667418771 - 2¹⁸ = 73218667156627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73218667418731) 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, 5229904815620 + ... + 5229904815633.

It is an arithmetic number, because the mean of its divisors is an integer number (20919619262508).

Almost surely, 2^{73218667418771} is an apocalyptic number.

73218667418771 is a deficient number, since it is larger than the sum of its proper divisors (10459809631261).

73218667418771 is a wasteful number, since it uses less digits than its factorization.

73218667418771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10459809631260.

The product of its digits is 132765696, while the sum is 68.

The spelling of 73218667418771 in words is "seventy-three trillion, two hundred eighteen billion, six hundred sixty-seven million, four hundred eighteen thousand, seven hundred seventy-one".