11611053405 has 128 divisors (see below), whose sum is σ = 23954227200. Its totient is φ = 5226826752.

The previous prime is 11611053401. The next prime is 11611053449. The reversal of 11611053405 is 50435011611.

11611053405 is a `hidden beast` number, since 1 + 1 + 611 + 0 + 5 + 3 + 40 + 5 = 666.

11611053405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11611053405 - 2² = 11611053401 is a prime.

It is a super-2 number, since 2×11611053405² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11611053401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24239956 + ... + 24240434.

It is an arithmetic number, because the mean of its divisors is an integer number (187142400).

Almost surely, 2^11611053405 is an apocalyptic number.

11611053405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11611053405 is an abundant number, since it is smaller than the sum of its proper divisors (12343173795).

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

11611053405 is a wasteful number, since it uses less digits than its factorization.

11611053405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 11611053405 in words is "eleven billion, six hundred eleven million, fifty-three thousand, four hundred five".