787998707899723 has 2 divisors, whose sum is σ = 787998707899724. Its totient is φ = 787998707899722.

The previous prime is 787998707899691. The next prime is 787998707899727. The reversal of 787998707899723 is 327998707899787.

It is a strong prime.

It is an emirp because it is prime and its reverse (327998707899787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 787998707899723 - 2⁵ = 787998707899691 is a prime.

It is a super-2 number, since 2×787998707899723² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (787998707899727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393999353949861 + 393999353949862.

It is an arithmetic number, because the mean of its divisors is an integer number (393999353949862).

Almost surely, 2^{787998707899723} is an apocalyptic number.

787998707899723 is a deficient number, since it is larger than the sum of its proper divisors (1).

787998707899723 is an equidigital number, since it uses as much as digits as its factorization.

787998707899723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338751673344, while the sum is 100.

The spelling of 787998707899723 in words is "seven hundred eighty-seven trillion, nine hundred ninety-eight billion, seven hundred seven million, eight hundred ninety-nine thousand, seven hundred twenty-three".