8136640511 has 8 divisors (see below), whose sum is σ = 8360588544. Its totient is φ = 7912905120.

The previous prime is 8136640459. The next prime is 8136640513. The reversal of 8136640511 is 1150466318.

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 8136640511 - 2²² = 8132446207 is a prime.

It is a super-2 number, since 2×8136640511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8136640513) 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, 26021 + ... + 130193.

It is an arithmetic number, because the mean of its divisors is an integer number (1045073568).

Almost surely, 2^8136640511 is an apocalyptic number.

8136640511 is a deficient number, since it is larger than the sum of its proper divisors (223948033).

8136640511 is a wasteful number, since it uses less digits than its factorization.

8136640511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106321.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 8136640511 is about 90203.3287135236. The cubic root of 8136640511 is about 2011.3224889117.

The spelling of 8136640511 in words is "eight billion, one hundred thirty-six million, six hundred forty thousand, five hundred eleven".