13561199680485 has 16 divisors (see below), whose sum is σ = 21746899001664. Its totient is φ = 7216313325312.

The previous prime is 13561199680447. The next prime is 13561199680487. The reversal of 13561199680485 is 58408699116531.

It is a happy number.

It is not a de Polignac number, because 13561199680485 - 2¹⁴ = 13561199664101 is a prime.

It is a super-2 number, since 2×13561199680485² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13561199680487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020399652 + ... + 1020412941.

It is an arithmetic number, because the mean of its divisors is an integer number (1359181187604).

Almost surely, 2^{13561199680485} is an apocalyptic number.

13561199680485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13561199680485 is a deficient number, since it is larger than the sum of its proper divisors (8185699321179).

13561199680485 is a wasteful number, since it uses less digits than its factorization.

13561199680485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040813044.

The product of its (nonzero) digits is 55987200, while the sum is 66.

The spelling of 13561199680485 in words is "thirteen trillion, five hundred sixty-one billion, one hundred ninety-nine million, six hundred eighty thousand, four hundred eighty-five".