11643262340 has 24 divisors (see below), whose sum is σ = 24479551320. Its totient is φ = 4651838208.

The previous prime is 11643262321. The next prime is 11643262361. The reversal of 11643262340 is 4326234611.

It can be written as a sum of positive squares in 4 ways, for example, as 276290884 + 11366971456 = 16622^2 + 106616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11643262297 and 11643262306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324185 + ... + 358304.

It is an arithmetic number, because the mean of its divisors is an integer number (1019981305).

Almost surely, 2^11643262340 is an apocalyptic number.

11643262340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11643262340 is an abundant number, since it is smaller than the sum of its proper divisors (12836288980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11643262340 is a wasteful number, since it uses less digits than its factorization.

11643262340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683351 (or 683349 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 11643262340 its reverse (4326234611), we get a palindrome (15969496951).

The spelling of 11643262340 in words is "eleven billion, six hundred forty-three million, two hundred sixty-two thousand, three hundred forty".