20436463402 has 8 divisors (see below), whose sum is σ = 32457912516. Its totient is φ = 9617159232.

The previous prime is 20436463391. The next prime is 20436463429.

20436463402 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 20155196961 + 281266441 = 141969^2 + 16771^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 601072453 = 20436463402 / (2 + 0 + 4 + 3 + 6 + 4 + 6 + 3 + 4 + 0 + 2).

It is an unprimeable number.

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, 300536193 + ... + 300536260.

Almost surely, 2^20436463402 is an apocalyptic number.

20436463402 is a deficient number, since it is larger than the sum of its proper divisors (12021449114).

20436463402 is a wasteful number, since it uses less digits than its factorization.

20436463402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601072472.

The product of its (nonzero) digits is 82944, while the sum is 34.

The spelling of 20436463402 in words is "twenty billion, four hundred thirty-six million, four hundred sixty-three thousand, four hundred two".