11438640045 has 128 divisors (see below), whose sum is σ = 23779123200. Its totient is φ = 5109018624.

The previous prime is 11438640007. The next prime is 11438640047. The reversal of 11438640045 is 54004683411.

11438640045 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 8 + 640 + 0 + 4 + 5 = 666.

It is not a de Polignac number, because 11438640045 - 2⁶ = 11438639981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11438639991 and 11438640009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11438640047) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10760184 + ... + 10761246.

It is an arithmetic number, because the mean of its divisors is an integer number (185774400).

Almost surely, 2^11438640045 is an apocalyptic number.

11438640045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11438640045 is an abundant number, since it is smaller than the sum of its proper divisors (12340483155).

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

11438640045 is a wasteful number, since it uses less digits than its factorization.

11438640045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 11438640045 in words is "eleven billion, four hundred thirty-eight million, six hundred forty thousand, forty-five".