11385992555 has 12 divisors (see below), whose sum is σ = 15893916480. Its totient is φ = 7807537584.

The previous prime is 11385992537. The next prime is 11385992581. The reversal of 11385992555 is 55529958311.

It is not a de Polignac number, because 11385992555 - 2¹⁴ = 11385976171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11385992497 and 11385992506.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23236475 + ... + 23236964.

It is an arithmetic number, because the mean of its divisors is an integer number (1324493040).

Almost surely, 2^11385992555 is an apocalyptic number.

11385992555 is a deficient number, since it is larger than the sum of its proper divisors (4507923925).

11385992555 is an equidigital number, since it uses as much as digits as its factorization.

11385992555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46473458 (or 46473451 counting only the distinct ones).

The product of its digits is 2430000, while the sum is 53.

The spelling of 11385992555 in words is "eleven billion, three hundred eighty-five million, nine hundred ninety-two thousand, five hundred fifty-five".