8154478720038 has 48 divisors (see below), whose sum is σ = 18973969519680. Its totient is φ = 2329565518224.

The previous prime is 8154478719949. The next prime is 8154478720067. The reversal of 8154478720038 is 8300278744518.

It is a self number, because there is not a number n which added to its sum of digits gives 8154478720038.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 709045 + ... + 4100207.

It is an arithmetic number, because the mean of its divisors is an integer number (395291031660).

Almost surely, 2^{8154478720038} is an apocalyptic number.

8154478720038 is an abundant number, since it is smaller than the sum of its proper divisors (10819490799642).

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

8154478720038 is a wasteful number, since it uses less digits than its factorization.

8154478720038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399361 (or 3399354 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 57.

The spelling of 8154478720038 in words is "eight trillion, one hundred fifty-four billion, four hundred seventy-eight million, seven hundred twenty thousand, thirty-eight".