82703887778087 has 4 divisors (see below), whose sum is σ = 82703927316240. Its totient is φ = 82703848239936.

The previous prime is 82703887778059. The next prime is 82703887778147. The reversal of 82703887778087 is 78087778830728.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82703887778087 is a prime.

It is a super-2 number, since 2×82703887778087² (a number of 29 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 (82703887718087) 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, 16445162 + ... + 20877047.

It is an arithmetic number, because the mean of its divisors is an integer number (20675981829060).

Almost surely, 2^{82703887778087} is an apocalyptic number.

82703887778087 is a deficient number, since it is larger than the sum of its proper divisors (39538153).

82703887778087 is a wasteful number, since it uses less digits than its factorization.

82703887778087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39538152.

The product of its (nonzero) digits is 3304390656, while the sum is 80.

The spelling of 82703887778087 in words is "eighty-two trillion, seven hundred three billion, eight hundred eighty-seven million, seven hundred seventy-eight thousand, eighty-seven".