11433645378 has 12 divisors (see below), whose sum is σ = 24772898358. Its totient is φ = 3811215120.

The previous prime is 11433645331. The next prime is 11433645403. The reversal of 11433645378 is 87354633411.

11433645378 is a `hidden beast` number, since 11 + 43 + 3 + 64 + 537 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10410733089 + 1022912289 = 102033^2 + 31983^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317601243 + ... + 317601278.

Almost surely, 2^11433645378 is an apocalyptic number.

11433645378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11433645378 is an abundant number, since it is smaller than the sum of its proper divisors (13339252980).

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

11433645378 is a wasteful number, since it uses less digits than its factorization.

11433645378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635202529 (or 635202526 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 11433645378 in words is "eleven billion, four hundred thirty-three million, six hundred forty-five thousand, three hundred seventy-eight".