15640135311 has 8 divisors (see below), whose sum is σ = 21338479360. Its totient is φ = 10184274072.

The previous prime is 15640135297. The next prime is 15640135351. The reversal of 15640135311 is 11353104651.

15640135311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 15640135311 - 2¹³ = 15640127119 is a prime.

It is a super-2 number, since 2×15640135311² (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 (15640135351) 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 7 ways as a sum of consecutive naturals, for example, 60620551 + ... + 60620808.

It is an arithmetic number, because the mean of its divisors is an integer number (2667309920).

Almost surely, 2^15640135311 is an apocalyptic number.

15640135311 is a deficient number, since it is larger than the sum of its proper divisors (5698344049).

15640135311 is a wasteful number, since it uses less digits than its factorization.

15640135311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121241405.

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 15640135311 its reverse (11353104651), we get a palindrome (26993239962).

The spelling of 15640135311 in words is "fifteen billion, six hundred forty million, one hundred thirty-five thousand, three hundred eleven".