78481644233 has 16 divisors (see below), whose sum is σ = 81978064896. Its totient is φ = 75048739920.

The previous prime is 78481644211. The next prime is 78481644239. The reversal of 78481644233 is 33244618487.

It is a cyclic number.

It is not a de Polignac number, because 78481644233 - 2¹⁶ = 78481578697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78481644239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1451816 + ... + 1504902.

It is an arithmetic number, because the mean of its divisors is an integer number (5123629056).

Almost surely, 2^78481644233 is an apocalyptic number.

It is an amenable number.

78481644233 is a deficient number, since it is larger than the sum of its proper divisors (3496420663).

78481644233 is a wasteful number, since it uses less digits than its factorization.

78481644233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53684.

The product of its digits is 3096576, while the sum is 50.

The spelling of 78481644233 in words is "seventy-eight billion, four hundred eighty-one million, six hundred forty-four thousand, two hundred thirty-three".