13421445345 has 96 divisors (see below), whose sum is σ = 30710534400. Its totient is φ = 5249617920.

The previous prime is 13421445337. The next prime is 13421445347. The reversal of 13421445345 is 54354412431.

It is not a de Polignac number, because 13421445345 - 2³ = 13421445337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13421445347) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 55020 + ... + 172829.

It is an arithmetic number, because the mean of its divisors is an integer number (319901400).

Almost surely, 2^13421445345 is an apocalyptic number.

13421445345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13421445345 is an abundant number, since it is smaller than the sum of its proper divisors (17289089055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13421445345 is a wasteful number, since it uses less digits than its factorization.

13421445345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227895 (or 227892 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

Adding to 13421445345 its reverse (54354412431), we get a palindrome (67775857776).

The spelling of 13421445345 in words is "thirteen billion, four hundred twenty-one million, four hundred forty-five thousand, three hundred forty-five".