8201158078 has 4 divisors (see below), whose sum is σ = 12301737120. Its totient is φ = 4100579038.

The previous prime is 8201158073. The next prime is 8201158103. The reversal of 8201158078 is 8708511028.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8201158078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8201158073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2050289518 + ... + 2050289521.

It is an arithmetic number, because the mean of its divisors is an integer number (3075434280).

Almost surely, 2^8201158078 is an apocalyptic number.

8201158078 is a deficient number, since it is larger than the sum of its proper divisors (4100579042).

8201158078 is a wasteful number, since it uses less digits than its factorization.

8201158078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100579041.

The product of its (nonzero) digits is 35840, while the sum is 40.

The square root of 8201158078 is about 90560.2455716635. The cubic root of 8201158078 is about 2016.6246015890.

The spelling of 8201158078 in words is "eight billion, two hundred one million, one hundred fifty-eight thousand, seventy-eight".