20401102343432 has 32 divisors (see below), whose sum is σ = 38885118168600. Its totient is φ = 10031788838400.

The previous prime is 20401102343431. The next prime is 20401102343437. The reversal of 20401102343432 is 23434320110402.

It can be written as a sum of positive squares in 4 ways, for example, as 16846542638116 + 3554559705316 = 4104454^2 + 1885354^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20401102343395 and 20401102343404.

It is not an unprimeable number, because it can be changed into a prime (20401102343431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23207 + ... + 6387702.

Almost surely, 2^{20401102343432} is an apocalyptic number.

It is an amenable number.

20401102343432 is a deficient number, since it is larger than the sum of its proper divisors (18484015825168).

20401102343432 is a wasteful number, since it uses less digits than its factorization.

20401102343432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6417497 (or 6417493 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 20401102343432 its reverse (23434320110402), we get a palindrome (43835422453834).

The spelling of 20401102343432 in words is "twenty trillion, four hundred one billion, one hundred two million, three hundred forty-three thousand, four hundred thirty-two".