20402462012356 has 12 divisors (see below), whose sum is σ = 37583482654480. Its totient is φ = 9664324111080.

The previous prime is 20402462012353. The next prime is 20402462012377. The reversal of 20402462012356 is 65321026420402.

It is not an unprimeable number, because it can be changed into a prime (20402462012353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134226723690 + ... + 134226723841.

Almost surely, 2^{20402462012356} is an apocalyptic number.

It is an amenable number.

20402462012356 is a deficient number, since it is larger than the sum of its proper divisors (17181020642124).

20402462012356 is a wasteful number, since it uses less digits than its factorization.

20402462012356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268453447554 (or 268453447552 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 20402462012356 its reverse (65321026420402), we get a palindrome (85723488432758).

The spelling of 20402462012356 in words is "twenty trillion, four hundred two billion, four hundred sixty-two million, twelve thousand, three hundred fifty-six".