503436425161 has 4 divisors (see below), whose sum is σ = 508420944324. Its totient is φ = 498451906000.

The previous prime is 503436425131. The next prime is 503436425197. The reversal of 503436425161 is 161524634305.

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

It can be written as a sum of positive squares in 2 ways, for example, as 207326319561 + 296110105600 = 455331^2 + 544160^2 .

It is a cyclic number.

It is not a de Polignac number, because 503436425161 - 2⁷ = 503436425033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503436425131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2492259430 + ... + 2492259631.

It is an arithmetic number, because the mean of its divisors is an integer number (127105236081).

Almost surely, 2^503436425161 is an apocalyptic number.

It is an amenable number.

503436425161 is a deficient number, since it is larger than the sum of its proper divisors (4984519163).

503436425161 is a wasteful number, since it uses less digits than its factorization.

503436425161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984519162.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 503436425161 in words is "five hundred three billion, four hundred thirty-six million, four hundred twenty-five thousand, one hundred sixty-one".