84148409478 has 32 divisors (see below), whose sum is σ = 192353598720. Its totient is φ = 24040605600.

The previous prime is 84148409441. The next prime is 84148409491. The reversal of 84148409478 is 87490484148.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556288 + ... + 691196.

It is an arithmetic number, because the mean of its divisors is an integer number (6011049960).

Almost surely, 2^84148409478 is an apocalyptic number.

84148409478 is an abundant number, since it is smaller than the sum of its proper divisors (108205189242).

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

84148409478 is a wasteful number, since it uses less digits than its factorization.

84148409478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149772.

The product of its (nonzero) digits is 8257536, while the sum is 57.

The spelling of 84148409478 in words is "eighty-four billion, one hundred forty-eight million, four hundred nine thousand, four hundred seventy-eight".