11640628543 has 2 divisors, whose sum is σ = 11640628544. Its totient is φ = 11640628542.

The previous prime is 11640628523. The next prime is 11640628577. The reversal of 11640628543 is 34582604611.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (34582604611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11640628543 - 2⁵ = 11640628511 is a prime.

It is a super-2 number, since 2×11640628543² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11640628496 and 11640628505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11640628523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5820314271 + 5820314272.

It is an arithmetic number, because the mean of its divisors is an integer number (5820314272).

Almost surely, 2^11640628543 is an apocalyptic number.

11640628543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11640628543 is an equidigital number, since it uses as much as digits as its factorization.

11640628543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 11640628543 in words is "eleven billion, six hundred forty million, six hundred twenty-eight thousand, five hundred forty-three".