13206531340421 has 8 divisors (see below), whose sum is σ = 13354992959040. Its totient is φ = 13058071358112.

The previous prime is 13206531340417. The next prime is 13206531340433. The reversal of 13206531340421 is 12404313560231.

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

It is a cyclic number.

It is not a de Polignac number, because 13206531340421 - 2² = 13206531340417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13206531340411) 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, 23888696 + ... + 24435278.

It is an arithmetic number, because the mean of its divisors is an integer number (1669374119880).

Almost surely, 2^{13206531340421} is an apocalyptic number.

It is an amenable number.

13206531340421 is a deficient number, since it is larger than the sum of its proper divisors (148461618619).

13206531340421 is an equidigital number, since it uses as much as digits as its factorization.

13206531340421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818155.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 13206531340421 in words is "thirteen trillion, two hundred six billion, five hundred thirty-one million, three hundred forty thousand, four hundred twenty-one".