20035123432 has 8 divisors (see below), whose sum is σ = 37565856450. Its totient is φ = 10017561712.

The previous prime is 20035123421. The next prime is 20035123447. The reversal of 20035123432 is 23432153002.

It can be written as a sum of positive squares in only one way, i.e., 18374886916 + 1660236516 = 135554^2 + 40746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20035123397 and 20035123406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252195207 + ... + 1252195222.

Almost surely, 2^20035123432 is an apocalyptic number.

It is an amenable number.

20035123432 is a deficient number, since it is larger than the sum of its proper divisors (17530733018).

20035123432 is a wasteful number, since it uses less digits than its factorization.

20035123432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504390435 (or 2504390431 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20035123432 its reverse (23432153002), we get a palindrome (43467276434).

The spelling of 20035123432 in words is "twenty billion, thirty-five million, one hundred twenty-three thousand, four hundred thirty-two".