11923385040 has 120 divisors (see below), whose sum is σ = 45763106688. Its totient is φ = 2725344000.

The previous prime is 11923385011. The next prime is 11923385041. The reversal of 11923385040 is 4058332911.

11923385040 is a `hidden beast` number, since 119 + 2 + 3 + 38 + 504 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×11923385040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11923384986 and 11923385004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11923385041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1177836 + ... + 1187915.

Almost surely, 2^11923385040 is an apocalyptic number.

11923385040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11923385040 is an abundant number, since it is smaller than the sum of its proper divisors (33839721648).

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

11923385040 is a wasteful number, since it uses less digits than its factorization.

11923385040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365777 (or 2365768 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

It can be divided in two parts, 1192338 and 5040, that added together give a triangular number (1197378 = T₁₅₄₇).

The spelling of 11923385040 in words is "eleven billion, nine hundred twenty-three million, three hundred eighty-five thousand, forty".