8156566452 has 48 divisors (see below), whose sum is σ = 20035290240. Its totient is φ = 2577619968.

The previous prime is 8156566433. The next prime is 8156566463. The reversal of 8156566452 is 2546656518.

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, 99577 + ... + 161952.

It is an arithmetic number, because the mean of its divisors is an integer number (417401880).

Almost surely, 2^8156566452 is an apocalyptic number.

It is an amenable number.

8156566452 is an abundant number, since it is smaller than the sum of its proper divisors (11878723788).

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

8156566452 is a wasteful number, since it uses less digits than its factorization.

8156566452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261672 (or 261670 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 48.

The square root of 8156566452 is about 90313.7113178281. The cubic root of 8156566452 is about 2012.9630030842.

The spelling of 8156566452 in words is "eight billion, one hundred fifty-six million, five hundred sixty-six thousand, four hundred fifty-two".