82355104564557 has 16 divisors (see below), whose sum is σ = 122337950303232. Its totient is φ = 48850223209520.

The previous prime is 82355104564553. The next prime is 82355104564561. The reversal of 82355104564557 is 75546540155328.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82355104564553) and next prime (82355104564561).

It is a cyclic number.

It is not a de Polignac number, because 82355104564557 - 2² = 82355104564553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82355104564557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82355104564553) 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, 26549032803 + ... + 26549035904.

It is an arithmetic number, because the mean of its divisors is an integer number (7646121893952).

Almost surely, 2^{82355104564557} is an apocalyptic number.

It is an amenable number.

82355104564557 is a deficient number, since it is larger than the sum of its proper divisors (39982845738675).

82355104564557 is a wasteful number, since it uses less digits than its factorization.

82355104564557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53098068768.

The product of its (nonzero) digits is 100800000, while the sum is 60.

The spelling of 82355104564557 in words is "eighty-two trillion, three hundred fifty-five billion, one hundred four million, five hundred sixty-four thousand, five hundred fifty-seven".