11430840979 has 2 divisors, whose sum is σ = 11430840980. Its totient is φ = 11430840978.

The previous prime is 11430840977. The next prime is 11430840997. The reversal of 11430840979 is 97904803411.

Together with next prime (11430840997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11430840979 - 2¹ = 11430840977 is a prime.

Together with 11430840977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11430840977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5715420489 + 5715420490.

It is an arithmetic number, because the mean of its divisors is an integer number (5715420490).

Almost surely, 2^11430840979 is an apocalyptic number.

11430840979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11430840979 is an equidigital number, since it uses as much as digits as its factorization.

11430840979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 11430840979 in words is "eleven billion, four hundred thirty million, eight hundred forty thousand, nine hundred seventy-nine".