82500078997 has 4 divisors (see below), whose sum is σ = 94285804576. Its totient is φ = 70714353420.

The previous prime is 82500078949. The next prime is 82500079003. The reversal of 82500078997 is 79987000528.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82500078997 is a prime.

It is a super-2 number, since 2×82500078997² (a number of 23 digits) contains 22 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 (82500058997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5892862779 + ... + 5892862792.

It is an arithmetic number, because the mean of its divisors is an integer number (23571451144).

Almost surely, 2^82500078997 is an apocalyptic number.

It is an amenable number.

82500078997 is a deficient number, since it is larger than the sum of its proper divisors (11785725579).

82500078997 is a wasteful number, since it uses less digits than its factorization.

82500078997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11785725578.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 82500078997 in words is "eighty-two billion, five hundred million, seventy-eight thousand, nine hundred ninety-seven".