8157543876 has 36 divisors (see below), whose sum is σ = 20624904300. Its totient is φ = 2718595008.

The previous prime is 8157543853. The next prime is 8157543881. The reversal of 8157543876 is 6783457518.

It is a happy number.

8157543876 is a `hidden beast` number, since 8 + 15 + 7 + 543 + 87 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5030497476 + 3127046400 = 70926^2 + 55920^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164970 + ... + 208638.

Almost surely, 2^8157543876 is an apocalyptic number.

It is an amenable number.

8157543876 is an abundant number, since it is smaller than the sum of its proper divisors (12467360424).

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

8157543876 is a wasteful number, since it uses less digits than its factorization.

8157543876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48868 (or 48863 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The square root of 8157543876 is about 90319.1224270918. The cubic root of 8157543876 is about 2013.0434061875.

The spelling of 8157543876 in words is "eight billion, one hundred fifty-seven million, five hundred forty-three thousand, eight hundred seventy-six".