20411443231402 has 8 divisors (see below), whose sum is σ = 30617190051012. Its totient is φ = 10205713214400.

The previous prime is 20411443231391. The next prime is 20411443231409. The reversal of 20411443231402 is 20413234411402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19620195621961 + 791247609441 = 4429469^2 + 889521^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20411443231409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517999 + ... + 6410242.

Almost surely, 2^{20411443231402} is an apocalyptic number.

20411443231402 is a deficient number, since it is larger than the sum of its proper divisors (10205746819610).

20411443231402 is a wasteful number, since it uses less digits than its factorization.

20411443231402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8401304.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 20411443231402 its reverse (20413234411402), we get a palindrome (40824677642804).

The spelling of 20411443231402 in words is "twenty trillion, four hundred eleven billion, four hundred forty-three million, two hundred thirty-one thousand, four hundred two".