20402032412 has 18 divisors (see below), whose sum is σ = 36479385432. Its totient is φ = 9983968984.

The previous prime is 20402032403. The next prime is 20402032433. The reversal of 20402032412 is 21423020402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1145648 + ... + 1163319.

It is an arithmetic number, because the mean of its divisors is an integer number (2026632524).

Almost surely, 2^20402032412 is an apocalyptic number.

It is an amenable number.

20402032412 is a deficient number, since it is larger than the sum of its proper divisors (16077353020).

20402032412 is a wasteful number, since it uses less digits than its factorization.

20402032412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309065 (or 2309016 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20402032412 its reverse (21423020402), we get a palindrome (41825052814).

The spelling of 20402032412 in words is "twenty billion, four hundred two million, thirty-two thousand, four hundred twelve".