13008645378 has 24 divisors (see below), whose sum is σ = 29843363628. Its totient is φ = 4081143552.

The previous prime is 13008645373. The next prime is 13008645437. The reversal of 13008645378 is 87354680031.

13008645378 is a `hidden beast` number, since 1 + 30 + 0 + 86 + 4 + 537 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12535713369 + 472932009 = 111963^2 + 21747^2 .

It is not an unprimeable number, because it can be changed into a prime (13008645373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21255651 + ... + 21256262.

Almost surely, 2^13008645378 is an apocalyptic number.

13008645378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13008645378 is an abundant number, since it is smaller than the sum of its proper divisors (16834718250).

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

13008645378 is a wasteful number, since it uses less digits than its factorization.

13008645378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42511938 (or 42511935 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 13008645378 in words is "thirteen billion, eight million, six hundred forty-five thousand, three hundred seventy-eight".