87904819980 has 36 divisors (see below), whose sum is σ = 266644621152. Its totient is φ = 23441285280.

The previous prime is 87904819973. The next prime is 87904820089. The reversal of 87904819980 is 8991840978.

87904819980 is a `hidden beast` number, since 8 + 79 + 0 + 481 + 9 + 9 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244179876 + ... + 244180235.

It is an arithmetic number, because the mean of its divisors is an integer number (7406795032).

Almost surely, 2^87904819980 is an apocalyptic number.

It is an amenable number.

87904819980 is an abundant number, since it is smaller than the sum of its proper divisors (178739801172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87904819980 is a wasteful number, since it uses less digits than its factorization.

87904819980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488360126 (or 488360121 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 63.

The spelling of 87904819980 in words is "eighty-seven billion, nine hundred four million, eight hundred nineteen thousand, nine hundred eighty".