11155404645 has 384 divisors, whose sum is σ = 26568622080. Its totient is φ = 4356737280.

The previous prime is 11155404643. The next prime is 11155404647. The reversal of 11155404645 is 54640455111.

11155404645 is a `hidden beast` number, since 1 + 1 + 1 + 5 + 5 + 4 + 0 + 4 + 645 = 666.

It is an interprime number because it is at equal distance from previous prime (11155404643) and next prime (11155404647).

It is not a de Polignac number, because 11155404645 - 2¹ = 11155404643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155404643) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 189074626 + ... + 189074684.

It is an arithmetic number, because the mean of its divisors is an integer number (69189120).

Almost surely, 2^11155404645 is an apocalyptic number.

11155404645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11155404645 is an abundant number, since it is smaller than the sum of its proper divisors (15413217435).

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

11155404645 is a wasteful number, since it uses less digits than its factorization.

11155404645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 11155404645 its reverse (54640455111), we get a palindrome (65795859756).

The spelling of 11155404645 in words is "eleven billion, one hundred fifty-five million, four hundred four thousand, six hundred forty-five".