10001440000402 has 4 divisors (see below), whose sum is σ = 15002160000606. Its totient is φ = 5000720000200.

The previous prime is 10001440000393. The next prime is 10001440000423. The reversal of 10001440000402 is 20400004410001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9733208196481 + 268231803921 = 3119809^2 + 517911^2 .

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 as a sum of consecutive naturals, namely, 2500360000099 + ... + 2500360000102.

Almost surely, 2^{10001440000402} is an apocalyptic number.

10001440000402 is a deficient number, since it is larger than the sum of its proper divisors (5000720000204).

10001440000402 is an equidigital number, since it uses as much as digits as its factorization.

10001440000402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000720000203.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 10001440000402 its reverse (20400004410001), we get a palindrome (30401444410403).

The spelling of 10001440000402 in words is "ten trillion, one billion, four hundred forty million, four hundred two", and thus it is an aban number.