8556481157 has 16 divisors (see below), whose sum is σ = 10394386560. Its totient is φ = 6875824128.

The previous prime is 8556481133. The next prime is 8556481159. The reversal of 8556481157 is 7511846558.

It is a cyclic number.

It is not a de Polignac number, because 8556481157 - 2⁸ = 8556480901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8556481159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109307 + ... + 170472.

It is an arithmetic number, because the mean of its divisors is an integer number (649649160).

Almost surely, 2^8556481157 is an apocalyptic number.

It is an amenable number.

8556481157 is a deficient number, since it is larger than the sum of its proper divisors (1837905403).

8556481157 is a wasteful number, since it uses less digits than its factorization.

8556481157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280060.

The product of its digits is 1344000, while the sum is 50.

The square root of 8556481157 is about 92501.2494888583. The cubic root of 8556481157 is about 2045.3379010157.

The spelling of 8556481157 in words is "eight billion, five hundred fifty-six million, four hundred eighty-one thousand, one hundred fifty-seven".