8155166987 has 8 divisors (see below), whose sum is σ = 8915849712. Its totient is φ = 7397701600.

The previous prime is 8155166969. The next prime is 8155167001. The reversal of 8155166987 is 7896615518.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8155166987 - 2⁶ = 8155166923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8155163987) 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, 799028 + ... + 809169.

It is an arithmetic number, because the mean of its divisors is an integer number (1114481214).

Almost surely, 2^8155166987 is an apocalyptic number.

8155166987 is a deficient number, since it is larger than the sum of its proper divisors (760682725).

8155166987 is a wasteful number, since it uses less digits than its factorization.

8155166987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608669.

The product of its digits is 3628800, while the sum is 56.

The square root of 8155166987 is about 90305.9631862703. The cubic root of 8155166987 is about 2012.8478716166.

The spelling of 8155166987 in words is "eight billion, one hundred fifty-five million, one hundred sixty-six thousand, nine hundred eighty-seven".