104155605787 has 2 divisors, whose sum is σ = 104155605788. Its totient is φ = 104155605786.

The previous prime is 104155605761. The next prime is 104155605857. The reversal of 104155605787 is 787506551401.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104155605787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104155605787.

It is not a weakly prime, because it can be changed into another prime (104155606787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52077802893 + 52077802894.

It is an arithmetic number, because the mean of its divisors is an integer number (52077802894).

Almost surely, 2^104155605787 is an apocalyptic number.

104155605787 is a deficient number, since it is larger than the sum of its proper divisors (1).

104155605787 is an equidigital number, since it uses as much as digits as its factorization.

104155605787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176000, while the sum is 49.

The spelling of 104155605787 in words is "one hundred four billion, one hundred fifty-five million, six hundred five thousand, seven hundred eighty-seven".