11455820899 has 2 divisors, whose sum is σ = 11455820900. Its totient is φ = 11455820898.

The previous prime is 11455820891. The next prime is 11455820927. The reversal of 11455820899 is 99802855411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11455820899 - 2³ = 11455820891 is a prime.

It is not a weakly prime, because it can be changed into another prime (11455820891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5727910449 + 5727910450.

It is an arithmetic number, because the mean of its divisors is an integer number (5727910450).

Almost surely, 2^11455820899 is an apocalyptic number.

11455820899 is a deficient number, since it is larger than the sum of its proper divisors (1).

11455820899 is an equidigital number, since it uses as much as digits as its factorization.

11455820899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 52.

The spelling of 11455820899 in words is "eleven billion, four hundred fifty-five million, eight hundred twenty thousand, eight hundred ninety-nine".