87478787874 has 16 divisors (see below), whose sum is σ = 175280978880. Its totient is φ = 29105695440.

The previous prime is 87478787861. The next prime is 87478787909. The reversal of 87478787874 is 47878787478.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 87478787796 and 87478787805.

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 7 ways as a sum of consecutive naturals, for example, 13471614 + ... + 13478105.

It is an arithmetic number, because the mean of its divisors is an integer number (10955061180).

Almost surely, 2^87478787874 is an apocalyptic number.

87478787874 is an abundant number, since it is smaller than the sum of its proper divisors (87802191006).

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

87478787874 is a wasteful number, since it uses less digits than its factorization.

87478787874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26950265.

The product of its digits is 1101463552, while the sum is 75.

The spelling of 87478787874 in words is "eighty-seven billion, four hundred seventy-eight million, seven hundred eighty-seven thousand, eight hundred seventy-four".