13995069640 has 16 divisors (see below), whose sum is σ = 31488906780. Its totient is φ = 5598027840.

The previous prime is 13995069593. The next prime is 13995069643. The reversal of 13995069640 is 4696059931.

It can be written as a sum of positive squares in 2 ways, for example, as 13391581284 + 603488356 = 115722^2 + 24566^2 .

It is not an unprimeable number, because it can be changed into a prime (13995069643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174938331 + ... + 174938410.

Almost surely, 2^13995069640 is an apocalyptic number.

13995069640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13995069640 is an abundant number, since it is smaller than the sum of its proper divisors (17493837140).

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

13995069640 is a wasteful number, since it uses less digits than its factorization.

13995069640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349876752 (or 349876748 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 52.

The spelling of 13995069640 in words is "thirteen billion, nine hundred ninety-five million, sixty-nine thousand, six hundred forty".