13420200400443 has 12 divisors (see below), whose sum is σ = 19565899650648. Its totient is φ = 8863185310560.

The previous prime is 13420200400427. The next prime is 13420200400471. The reversal of 13420200400443 is 34400400202431.

It is a happy number.

13420200400443 is a `hidden beast` number, since 1 + 34 + 20 + 200 + 400 + 4 + 4 + 3 = 666.

It is not a de Polignac number, because 13420200400443 - 2⁴ = 13420200400427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13420200400423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6967912018 + ... + 6967913943.

It is an arithmetic number, because the mean of its divisors is an integer number (1630491637554).

Almost surely, 2^{13420200400443} is an apocalyptic number.

13420200400443 is a deficient number, since it is larger than the sum of its proper divisors (6145699250205).

13420200400443 is a wasteful number, since it uses less digits than its factorization.

13420200400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13935826074 (or 13935826071 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 13420200400443 its reverse (34400400202431), we get a palindrome (47820600602874).

The spelling of 13420200400443 in words is "thirteen trillion, four hundred twenty billion, two hundred million, four hundred thousand, four hundred forty-three".