104878817749 has 2 divisors, whose sum is σ = 104878817750. Its totient is φ = 104878817748.

The previous prime is 104878817699. The next prime is 104878817761. The reversal of 104878817749 is 947718878401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82653375025 + 22225442724 = 287495^2 + 149082^2 .

It is a cyclic number.

It is not a de Polignac number, because 104878817749 - 2⁹ = 104878817237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104878811749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52439408874 + 52439408875.

It is an arithmetic number, because the mean of its divisors is an integer number (52439408875).

Almost surely, 2^104878817749 is an apocalyptic number.

It is an amenable number.

104878817749 is a deficient number, since it is larger than the sum of its proper divisors (1).

104878817749 is an equidigital number, since it uses as much as digits as its factorization.

104878817749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25288704, while the sum is 64.

The spelling of 104878817749 in words is "one hundred four billion, eight hundred seventy-eight million, eight hundred seventeen thousand, seven hundred forty-nine".