13561605973480 has 16 divisors (see below), whose sum is σ = 30513613440420. Its totient is φ = 5424642389376.

The previous prime is 13561605973469. The next prime is 13561605973541. The reversal of 13561605973480 is 8437950616531.

It can be written as a sum of positive squares in 2 ways, for example, as 11956615971556 + 1604990001924 = 3457834^2 + 1266882^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169520074629 + ... + 169520074708.

Almost surely, 2^{13561605973480} is an apocalyptic number.

13561605973480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13561605973480 is an abundant number, since it is smaller than the sum of its proper divisors (16952007466940).

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

13561605973480 is a wasteful number, since it uses less digits than its factorization.

13561605973480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339040149348 (or 339040149344 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 58.

The spelling of 13561605973480 in words is "thirteen trillion, five hundred sixty-one billion, six hundred five million, nine hundred seventy-three thousand, four hundred eighty".