13211316640454 has 4 divisors (see below), whose sum is σ = 19816974960684. Its totient is φ = 6605658320226.

The previous prime is 13211316640309. The next prime is 13211316640463. The reversal of 13211316640454 is 45404661311231.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×13211316640454² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302829160112 + ... + 3302829160115.

It is an arithmetic number, because the mean of its divisors is an integer number (4954243740171).

Almost surely, 2^{13211316640454} is an apocalyptic number.

13211316640454 is a deficient number, since it is larger than the sum of its proper divisors (6605658320230).

13211316640454 is an equidigital number, since it uses as much as digits as its factorization.

13211316640454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6605658320229.

The product of its (nonzero) digits is 207360, while the sum is 41.

Adding to 13211316640454 its reverse (45404661311231), we get a palindrome (58615977951685).

The spelling of 13211316640454 in words is "thirteen trillion, two hundred eleven billion, three hundred sixteen million, six hundred forty thousand, four hundred fifty-four".