1263151450444 has 24 divisors (see below), whose sum is σ = 2387746697168. Its totient is φ = 581231661120.

The previous prime is 1263151450433. The next prime is 1263151450459. The reversal of 1263151450444 is 4440541513621.

It is a junction number, because it is equal to n+sod(n) for n = 1263151450397 and 1263151450406.

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 7 ways as a sum of consecutive naturals, for example, 36676707 + ... + 36711130.

Almost surely, 2^{1263151450444} is an apocalyptic number.

It is an amenable number.

1263151450444 is a deficient number, since it is larger than the sum of its proper divisors (1124595246724).

1263151450444 is a wasteful number, since it uses less digits than its factorization.

1263151450444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73388185 (or 73388183 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 1263151450444 in words is "one trillion, two hundred sixty-three billion, one hundred fifty-one million, four hundred fifty thousand, four hundred forty-four".