503402044356 has 18 divisors (see below), whose sum is σ = 1272488501102. Its totient is φ = 167800681440.

The previous prime is 503402044339. The next prime is 503402044403. The reversal of 503402044356 is 653440204305.

503402044356 is a `hidden beast` number, since 503 + 40 + 20 + 4 + 43 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 437026766400 + 66375277956 = 661080^2 + 257634^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 13983390121 = 503402044356 / (5 + 0 + 3 + 4 + 0 + 2 + 0 + 4 + 4 + 3 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 503402044356.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6991695025 + ... + 6991695096.

Almost surely, 2^503402044356 is an apocalyptic number.

It is an amenable number.

503402044356 is an abundant number, since it is smaller than the sum of its proper divisors (769086456746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

503402044356 is a wasteful number, since it uses less digits than its factorization.

503402044356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13983390131 (or 13983390126 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 503402044356 in words is "five hundred three billion, four hundred two million, forty-four thousand, three hundred fifty-six".