8197011556 has 24 divisors (see below), whose sum is σ = 14422343040. Its totient is φ = 4076368800.

The previous prime is 8197011553. The next prime is 8197011629. The reversal of 8197011556 is 6551107918.

It is a super-2 number, since 2×8197011556² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8197011553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007525 + ... + 2011603.

It is an arithmetic number, because the mean of its divisors is an integer number (600930960).

Almost surely, 2^8197011556 is an apocalyptic number.

It is an amenable number.

8197011556 is a deficient number, since it is larger than the sum of its proper divisors (6225331484).

8197011556 is a wasteful number, since it uses less digits than its factorization.

8197011556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675 (or 6673 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 43.

The square root of 8197011556 is about 90537.3489561076. The cubic root of 8197011556 is about 2016.2846744767.

The spelling of 8197011556 in words is "eight billion, one hundred ninety-seven million, eleven thousand, five hundred fifty-six".