104081987421 has 16 divisors (see below), whose sum is σ = 159512625600. Its totient is φ = 66995301744.

The previous prime is 104081987417. The next prime is 104081987461. The reversal of 104081987421 is 124789180401.

104081987421 is a `hidden beast` number, since 10 + 408 + 198 + 7 + 42 + 1 = 666.

It is not a de Polignac number, because 104081987421 - 2² = 104081987417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104081987461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66462811 + ... + 66464376.

It is an arithmetic number, because the mean of its divisors is an integer number (9969539100).

Almost surely, 2^104081987421 is an apocalyptic number.

It is an amenable number.

104081987421 is a deficient number, since it is larger than the sum of its proper divisors (55430638179).

104081987421 is a wasteful number, since it uses less digits than its factorization.

104081987421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132927225 (or 132927219 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 104081987421 in words is "one hundred four billion, eighty-one million, nine hundred eighty-seven thousand, four hundred twenty-one".