1343455213521 has 16 divisors (see below), whose sum is σ = 1795103170560. Its totient is φ = 893722403280.

The previous prime is 1343455213493. The next prime is 1343455213547. The reversal of 1343455213521 is 1253125543431.

It is not a de Polignac number, because 1343455213521 - 2³⁷ = 1206016260049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1343455213521.

It is not an unprimeable number, because it can be changed into a prime (1343455213021) 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, 16573536 + ... + 16654398.

It is an arithmetic number, because the mean of its divisors is an integer number (112193948160).

Almost surely, 2^{1343455213521} is an apocalyptic number.

It is an amenable number.

1343455213521 is a deficient number, since it is larger than the sum of its proper divisors (451647957039).

1343455213521 is a wasteful number, since it uses less digits than its factorization.

1343455213521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92636.

The product of its digits is 216000, while the sum is 39.

The spelling of 1343455213521 in words is "one trillion, three hundred forty-three billion, four hundred fifty-five million, two hundred thirteen thousand, five hundred twenty-one".