82775918407 has 48 divisors (see below), whose sum is σ = 108575732160. Its totient is φ = 61439864832.

The previous prime is 82775918387. The next prime is 82775918447. The reversal of 82775918407 is 70481957728.

It is a de Polignac number, because none of the positive numbers 2^k-82775918407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82775918447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8331819 + ... + 8341747.

It is an arithmetic number, because the mean of its divisors is an integer number (2261994420).

Almost surely, 2^82775918407 is an apocalyptic number.

82775918407 is a deficient number, since it is larger than the sum of its proper divisors (25799813753).

82775918407 is a wasteful number, since it uses less digits than its factorization.

82775918407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10300 (or 10283 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 58.

The spelling of 82775918407 in words is "eighty-two billion, seven hundred seventy-five million, nine hundred eighteen thousand, four hundred seven".