13408857661960 has 64 divisors (see below), whose sum is σ = 30241956890880. Its totient is φ = 5350741393920.

The previous prime is 13408857661943. The next prime is 13408857662023. The reversal of 13408857661960 is 6916675880431.

It is a junction number, because it is equal to n+sod(n) for n = 13408857661892 and 13408857661901.

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 15 ways as a sum of consecutive naturals, for example, 149352444 + ... + 149442196.

It is an arithmetic number, because the mean of its divisors is an integer number (472530576420).

Almost surely, 2^{13408857661960} is an apocalyptic number.

13408857661960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13408857661960 is an abundant number, since it is smaller than the sum of its proper divisors (16833099228920).

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

13408857661960 is a wasteful number, since it uses less digits than its factorization.

13408857661960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98638 (or 98634 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 13408857661960 in words is "thirteen trillion, four hundred eight billion, eight hundred fifty-seven million, six hundred sixty-one thousand, nine hundred sixty".