13557599561908 has 12 divisors (see below), whose sum is σ = 23728488990052. Its totient is φ = 6778031279040.

The previous prime is 13557599561893. The next prime is 13557599561969. The reversal of 13557599561908 is 80916599575531.

It can be written as a sum of positive squares in 2 ways, for example, as 11184730432164 + 2372869129744 = 3344358^2 + 1540412^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192085785 + ... + 192156352.

Almost surely, 2^{13557599561908} is an apocalyptic number.

It is an amenable number.

13557599561908 is a deficient number, since it is larger than the sum of its proper divisors (10170889428144).

13557599561908 is a wasteful number, since it uses less digits than its factorization.

13557599561908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384250962 (or 384250960 counting only the distinct ones).

The product of its (nonzero) digits is 459270000, while the sum is 73.

The spelling of 13557599561908 in words is "thirteen trillion, five hundred fifty-seven billion, five hundred ninety-nine million, five hundred sixty-one thousand, nine hundred eight".