104778159421 has 6 divisors (see below), whose sum is σ = 113458007130. Its totient is φ = 96718300848.

The previous prime is 104778159407. The next prime is 104778159443. The reversal of 104778159421 is 124951877401.

It can be written as a sum of positive squares in 3 ways, for example, as 6180196 + 104771979225 = 2486^2 + 323685^2 .

It is not a de Polignac number, because 104778159421 - 2¹¹ = 104778157373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104778159401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 309994386 + ... + 309994723.

It is an arithmetic number, because the mean of its divisors is an integer number (18909667855).

Almost surely, 2^104778159421 is an apocalyptic number.

It is an amenable number.

104778159421 is a deficient number, since it is larger than the sum of its proper divisors (8679847709).

104778159421 is an equidigital number, since it uses as much as digits as its factorization.

104778159421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619989135 (or 619989122 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 49.

The spelling of 104778159421 in words is "one hundred four billion, seven hundred seventy-eight million, one hundred fifty-nine thousand, four hundred twenty-one".