82351572355537 has 4 divisors (see below), whose sum is σ = 87195782494116. Its totient is φ = 77507362216960.

The previous prime is 82351572355513. The next prime is 82351572355561. The reversal of 82351572355537 is 73555327515328.

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

It is an interprime number because it is at equal distance from previous prime (82351572355513) and next prime (82351572355561).

It can be written as a sum of positive squares in 2 ways, for example, as 70521852357441 + 11829719998096 = 8397729^2 + 3439436^2 .

It is a cyclic number.

It is not a de Polignac number, because 82351572355537 - 2²⁷ = 82351438137809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82351572355567) 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, 2422105069264 + ... + 2422105069297.

It is an arithmetic number, because the mean of its divisors is an integer number (21798945623529).

Almost surely, 2^{82351572355537} is an apocalyptic number.

It is an amenable number.

82351572355537 is a deficient number, since it is larger than the sum of its proper divisors (4844210138579).

82351572355537 is a wasteful number, since it uses less digits than its factorization.

82351572355537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844210138578.

The product of its digits is 132300000, while the sum is 61.

The spelling of 82351572355537 in words is "eighty-two trillion, three hundred fifty-one billion, five hundred seventy-two million, three hundred fifty-five thousand, five hundred thirty-seven".