1284825650503 has 4 divisors (see below), whose sum is σ = 1286034330448. Its totient is φ = 1283616970560.

The previous prime is 1284825650461. The next prime is 1284825650551. The reversal of 1284825650503 is 3050565284821.

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

It is a cyclic number.

It is not a de Polignac number, because 1284825650503 - 2¹³ = 1284825642311 is a prime.

It is the 1133502-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284825650203) by changing a digit.

It is a nontrivial repunit in base 1133501.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604338378 + ... + 604340503.

It is an arithmetic number, because the mean of its divisors is an integer number (321508582612).

Almost surely, 2^{1284825650503} is an apocalyptic number.

1284825650503 is a deficient number, since it is larger than the sum of its proper divisors (1208679945).

1284825650503 is a wasteful number, since it uses less digits than its factorization.

1284825650503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208679944.

The product of its (nonzero) digits is 2304000, while the sum is 49.

The spelling of 1284825650503 in words is "one trillion, two hundred eighty-four billion, eight hundred twenty-five million, six hundred fifty thousand, five hundred three".