13155202005421 has 8 divisors (see below), whose sum is σ = 15045008226624. Its totient is φ = 11268018696480.

The previous prime is 13155202005391. The next prime is 13155202005497. The reversal of 13155202005421 is 12450020255131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13155202005421 - 2⁹ = 13155202004909 is a prime.

It is a super-2 number, since 2×13155202005421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155202005821) 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, 655717315 + ... + 655737376.

It is an arithmetic number, because the mean of its divisors is an integer number (1880626028328).

Almost surely, 2^{13155202005421} is an apocalyptic number.

It is an amenable number.

13155202005421 is a deficient number, since it is larger than the sum of its proper divisors (1889806221203).

13155202005421 is a wasteful number, since it uses less digits than its factorization.

13155202005421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311456131.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 13155202005421 in words is "thirteen trillion, one hundred fifty-five billion, two hundred two million, five thousand, four hundred twenty-one".