40828688687 has 2 divisors, whose sum is σ = 40828688688. Its totient is φ = 40828688686.

The previous prime is 40828688657. The next prime is 40828688689. The reversal of 40828688687 is 78688682804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40828688687 - 2⁶ = 40828688623 is a prime.

Together with 40828688689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40828688689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20414344343 + 20414344344.

It is an arithmetic number, because the mean of its divisors is an integer number (20414344344).

Almost surely, 2^40828688687 is an apocalyptic number.

40828688687 is a deficient number, since it is larger than the sum of its proper divisors (1).

40828688687 is an equidigital number, since it uses as much as digits as its factorization.

40828688687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66060288, while the sum is 65.

The spelling of 40828688687 in words is "forty billion, eight hundred twenty-eight million, six hundred eighty-eight thousand, six hundred eighty-seven".