8156078436 has 96 divisors (see below), whose sum is σ = 21598617600. Its totient is φ = 2372782720.

The previous prime is 8156078429. The next prime is 8156078473. The reversal of 8156078436 is 6348706518.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 679261 + ... + 691163.

It is an arithmetic number, because the mean of its divisors is an integer number (224985600).

Almost surely, 2^8156078436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8156078436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10799308800).

8156078436 is an abundant number, since it is smaller than the sum of its proper divisors (13442539164).

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

8156078436 is a wasteful number, since it uses less digits than its factorization.

8156078436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12129 (or 12127 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 8156078436 is about 90311.0094949669. The cubic root of 8156078436 is about 2012.9228563815.

The spelling of 8156078436 in words is "eight billion, one hundred fifty-six million, seventy-eight thousand, four hundred thirty-six".