82351575721613 has 8 divisors (see below), whose sum is σ = 89838742912896. Its totient is φ = 74864518581600.

The previous prime is 82351575721607. The next prime is 82351575721619. The reversal of 82351575721613 is 31612757515328.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82351575721607) and next prime (82351575721619).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82351575721613 - 2²⁴ = 82351558944397 is a prime.

It is a super-3 number, since 3×82351575721613³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82351575721619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25944293 + ... + 28944938.

It is an arithmetic number, because the mean of its divisors is an integer number (11229842864112).

Almost surely, 2^{82351575721613} is an apocalyptic number.

It is an amenable number.

82351575721613 is a deficient number, since it is larger than the sum of its proper divisors (7487167191283).

82351575721613 is a wasteful number, since it uses less digits than its factorization.

82351575721613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55025635.

The product of its digits is 10584000, while the sum is 56.

The spelling of 82351575721613 in words is "eighty-two trillion, three hundred fifty-one billion, five hundred seventy-five million, seven hundred twenty-one thousand, six hundred thirteen".