13317651940 has 24 divisors (see below), whose sum is σ = 28243975032. Its totient is φ = 5274316800.

The previous prime is 13317651923. The next prime is 13317651953. The reversal of 13317651940 is 4915671331.

It can be written as a sum of positive squares in 4 ways, for example, as 1816805376 + 11500846564 = 42624^2 + 107242^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13317651893 and 13317651902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3294429 + ... + 3298468.

It is an arithmetic number, because the mean of its divisors is an integer number (1176832293).

Almost surely, 2^13317651940 is an apocalyptic number.

13317651940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13317651940 is an abundant number, since it is smaller than the sum of its proper divisors (14926323092).

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

13317651940 is a wasteful number, since it uses less digits than its factorization.

13317651940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593007 (or 6593005 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 13317651940 in words is "thirteen billion, three hundred seventeen million, six hundred fifty-one thousand, nine hundred forty".