503404140077 has 4 divisors (see below), whose sum is σ = 509060366460. Its totient is φ = 497747913696.

The previous prime is 503404140073. The next prime is 503404140103. The reversal of 503404140077 is 770041404305.

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 276319486921 + 227084653156 = 525661^2 + 476534^2 .

It is a cyclic number.

It is not a de Polignac number, because 503404140077 - 2² = 503404140073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503404140073) 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, 2828113058 + ... + 2828113235.

It is an arithmetic number, because the mean of its divisors is an integer number (127265091615).

Almost surely, 2^503404140077 is an apocalyptic number.

It is an amenable number.

503404140077 is a deficient number, since it is larger than the sum of its proper divisors (5656226383).

503404140077 is an equidigital number, since it uses as much as digits as its factorization.

503404140077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5656226382.

The product of its (nonzero) digits is 47040, while the sum is 35.

The spelling of 503404140077 in words is "five hundred three billion, four hundred four million, one hundred forty thousand, seventy-seven".