87421542835478 has 16 divisors (see below), whose sum is σ = 131441340179760. Its totient is φ = 43607794922496.

The previous prime is 87421542835423. The next prime is 87421542835499. The reversal of 87421542835478 is 87453824512478.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2592488 + ... + 13474571.

It is an arithmetic number, because the mean of its divisors is an integer number (8215083761235).

Almost surely, 2^{87421542835478} is an apocalyptic number.

87421542835478 is a deficient number, since it is larger than the sum of its proper divisors (44019797344282).

87421542835478 is a wasteful number, since it uses less digits than its factorization.

87421542835478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16073471.

The product of its digits is 481689600, while the sum is 68.

The spelling of 87421542835478 in words is "eighty-seven trillion, four hundred twenty-one billion, five hundred forty-two million, eight hundred thirty-five thousand, four hundred seventy-eight".