13533155242461 has 8 divisors (see below), whose sum is σ = 20049118877760. Its totient is φ = 9022103494956.

The previous prime is 13533155242457. The next prime is 13533155242471. The reversal of 13533155242461 is 16424255133531.

13533155242461 is a `hidden beast` number, since 1 + 3 + 5 + 3 + 31 + 552 + 4 + 2 + 4 + 61 = 666.

It is not a de Polignac number, because 13533155242461 - 2² = 13533155242457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13533155242471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250613985945 + ... + 250613985998.

It is an arithmetic number, because the mean of its divisors is an integer number (2506139859720).

Almost surely, 2^{13533155242461} is an apocalyptic number.

It is an amenable number.

13533155242461 is a deficient number, since it is larger than the sum of its proper divisors (6515963635299).

13533155242461 is an equidigital number, since it uses as much as digits as its factorization.

13533155242461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501227971952 (or 501227971946 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 13533155242461 in words is "thirteen trillion, five hundred thirty-three billion, one hundred fifty-five million, two hundred forty-two thousand, four hundred sixty-one".