11405653623 has 48 divisors (see below), whose sum is σ = 20287787520. Its totient is φ = 6012885312.

The previous prime is 11405653619. The next prime is 11405653627. The reversal of 11405653623 is 32635650411.

11405653623 is a `hidden beast` number, since 1 + 1 + 40 + 565 + 36 + 23 = 666.

It is an interprime number because it is at equal distance from previous prime (11405653619) and next prime (11405653627).

It is not a de Polignac number, because 11405653623 - 2² = 11405653619 is a prime.

It is a super-2 number, since 2×11405653623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405653627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2519440 + ... + 2523962.

It is an arithmetic number, because the mean of its divisors is an integer number (422662240).

Almost surely, 2^11405653623 is an apocalyptic number.

11405653623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11405653623 is a deficient number, since it is larger than the sum of its proper divisors (8882133897).

11405653623 is a wasteful number, since it uses less digits than its factorization.

11405653623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7628 (or 7625 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 11405653623 in words is "eleven billion, four hundred five million, six hundred fifty-three thousand, six hundred twenty-three".