8081156697 has 16 divisors (see below), whose sum is σ = 11247631488. Its totient is φ = 5151238400.

The previous prime is 8081156687. The next prime is 8081156723. The reversal of 8081156697 is 7966511808.

It is a cyclic number.

It is not a de Polignac number, because 8081156697 - 2¹¹ = 8081154649 is a prime.

It is a super-2 number, since 2×8081156697² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8081156687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172363 + ... + 214175.

It is an arithmetic number, because the mean of its divisors is an integer number (702976968).

Almost surely, 2^8081156697 is an apocalyptic number.

It is an amenable number.

8081156697 is a deficient number, since it is larger than the sum of its proper divisors (3166474791).

8081156697 is a wasteful number, since it uses less digits than its factorization.

8081156697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44640.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 8081156697 is about 89895.2540293424. The cubic root of 8081156697 is about 2006.7403166304.

The spelling of 8081156697 in words is "eight billion, eighty-one million, one hundred fifty-six thousand, six hundred ninety-seven".