82320735378873 has 4 divisors (see below), whose sum is σ = 109760980505168. Its totient is φ = 54880490252580.

The previous prime is 82320735378839. The next prime is 82320735378907. The reversal of 82320735378873 is 37887353702328.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (82320735378839) and next prime (82320735378907).

It is not a de Polignac number, because 82320735378873 - 2²² = 82320731184569 is a prime.

It is a super-4 number, since 4×82320735378873⁴ (a number of 57 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82320735378073) 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, 13720122563143 + ... + 13720122563148.

It is an arithmetic number, because the mean of its divisors is an integer number (27440245126292).

Almost surely, 2^{82320735378873} is an apocalyptic number.

It is an amenable number.

82320735378873 is a deficient number, since it is larger than the sum of its proper divisors (27440245126295).

82320735378873 is a wasteful number, since it uses less digits than its factorization.

82320735378873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27440245126294.

The product of its (nonzero) digits is 284497920, while the sum is 66.

The spelling of 82320735378873 in words is "eighty-two trillion, three hundred twenty billion, seven hundred thirty-five million, three hundred seventy-eight thousand, eight hundred seventy-three".